1. Super Mario Galaxy: I know 3D Marios are fantastic, but I wasn't extremely hyped or expected much. My bad. :P

2. Trauma Center: New Blood: Who knew being a futuristic surgeon could be so engaging?

3. Mario Kart Wii: Knew it would be awesome, but not 850 hours, 3rd favorite game of all time awesome.

4. Wii Music: After all of the criticism, I still do not see why everyone hates it with a passion. Uncreative hooligins, probably.

5. Animal Crossing: City Folk: 2009 was the summer of love for me and this game. 5 hours daily and built an mazing town I never dreamed possible.

it has to be Alan Wake for me

Super Mario Galaxy. After Mario 64 which I found ok and Sunshine in which I hated This game rocks. I still much prefer 2D Mario over 3D, but I really enjoyed this one and I expected to just play it once or so. Enjoyed the sequal even more.

Metroid Other M. To be honest I wasnt sure what to expect out of it as in like or dislike. I was excited it wasnt going to be a FPA again, but I wasnt sure it would be pulled off. I did preorder it and I am glad I did. Its a big change up. Could use some tweeking, but the basic gameplay is great.

Animal Crossing City Folk- I had never played a AC before, but my EX GF's daughter was really into it. Anyways,one day I sat with her and played too. I ended up buying it for myself and have way to much time in it.

Just Dance- I dont get into dance or music type games, but I cannot lie. I bought this for something to enjoy with my ex and daughter and we had way to much silly fun with it.

Endless Ocean 2- Never played the first. Thought well if I liked AC and I like water Why not give it a shot. Yet another game I have put way to much time into.

Trauma Center: Second Opinion- Yet another game I wasnt sure I would enjoy at all. Saw it for $20 picked it up and find it to be a very enjoyable game.

Izuna 2: The Unemployed Ninja Returns. I bought this because I liked the boxed art a lot and it was $7. Turned out to be a pretty good game.

Theres more im sure, but thats off the top of my head.

Dead Space, easily.

A game made by EA redwood at the time with a record of making simpson and mafia games.
I was expecting nothing of it. Because it was an EA game, (and this was before they aquired bioware).

But found my favorite shooter and horror game in a while. With interesting Shooting Mechanics (Shooting limbs instead of head and body shots). Along with cool powers, and unique weapons.
And the sequal was even better.

A  second was lara croft and the guardian of light.

A spinoff that looked like it was going to be crap because it wasn't even a "tomb raider game". Well it was awesome and 2nd fav game featuring lara croft. But it was made by crystal dynamics and I expected more from them than EA redwood initially

The sims 3 <3

Uncharted - I expected something GREAT but not AMAZING.

Uncharted 2 - I expected AMAZING but the game is RIDICULOUS AMAZING.

Demon's Souls - I expected NOTHING and receive ALL.

Batman: AA - I expected a GOOD game and it is GREAT.

inFAMOUS - Again I expected GOOD but not AMAZING.

LittleBigPlanet - I just receive EVERYTHING.

Gran Turismo 5 - Give me what I always dream with a racing game.

So far my scores for these games: 9.4/10 (Uncharted ); 9.7/10 (Uncharted 2); 9.6/10 (Demon's Soul); 9.3/10 (Batman: AA); 9.5/10 inFAMOUS; 9.8/10 (LittleBigPlanet); 9.9/10 (Gran Turismo 5).

Edit - Some games surprise me on 360: Halo 3 and Gears of War.

Castlevania LOS: I thought It looked decent but I didn't think it was going to be amazing and then I played it and damn it's good

Killzone 2: I didn't know the first thing about it when I bought it other then it's a shooter and It was great

Bioshock: Almost the same story as above but I knew about it but didn't pay to much attention to it since it was X360 exclusive and when I heard it was coming to the PS3 I looked into it and it seemed decent, and It turned out to be amazing

I intepreted (sp) the title of the thread to mean games I expected to suck but strangely enjoyed

Star Ocean: The Last Hope.  I feel bad now after I spent so much time hating on the voice acting and "choice" cut scenes that showed how bad the game was supposed to be, but for whatever reason, I decided to rent it and was instantly blown away, so much so I decided to buy it.

UNO: This game should not be this addictive...it's a gamesloft game for crying out loud!!!

Uncharted: Drake's Fortune: I didn't know about Uncharted until a friend lent me a copy of his during late 2007 and I really wasn't expecting anything much from it and Naughty Dog lost my love during the PS2 era with Jak and Daxter so at first I was a bit skeptical to play it but I decided to give it a shot because afterall, Naughty Dog were the ones who got me hooked into Gaming back when I was young due to Crash Bandicoot. So I played it and it was great to play. I liked Uncharted but wasn't quite to my 100% likings. Back in 2007 I loved Resistance:FOM over Uncharted. Then Uncharted 2 came along... and blew my mind and that was when ND recaptured my upmost love and attention.

LittleBigPlanet: I remember one of my very first topics I started here at VGC was me praising and celebrating how fantastic LBP was back in Mid 2009. I am a big platformer games fan but I wasn't too sure on LBP. But what got me into buying it was the demo that was released and the day after playing the demo I went out to the stores and bought myself a copy of LBP. A demo was all I needed and no other friend had LBP and the demo MM released was all I needed. This was one of the reasons why I trust demos a lot and demos definitely help me determine whether to buy a game or not and LBP was a must buy for me.

Assassin's Creed II: After a disappointing AC I, I really didn't have intentions of buying AC II at all. When it went on sale for half price and when a friend told me you must buy it, I trusted him and bought and a decision well made by me to buy it. Everything was just so much better than AC I and completely got me hooked into the AC Universe and the AC Series itself, which led me into buying the Limited Codex Edition of AC Brotherhood Day 1 last year, which eventually became my GOTY 2010. Also Assassin's Creed is my second favorite new IP for this Gen behind Uncharted.

Dragon Age Origins: I thank the VGC community for pursuading me to buy Dragon Age Origins. I hardly ever played WRPGs previously but DAO was just fanstastic. It opened me up to WRPGs, opened me up to BioWare and the ME series. Hence it led me to buying the Signature Edition of DA II on Day 1.

Red Dead Redemption: Like I've explained for the past 10 times, I didn't even know that RDR even existed until APril 2010, a month before it's release date. My brother showed me a trailer of it and hyped it up but I wasn't convinced since I thought it would turn out to be as boring as GTA IV and it was also a Western themed game, which I had no intentions of playing. My brother wanted it so much and I did buy it for him on launch day and thank god I bought it. Absolutely stunning and exemplary game. It was so damn good that it was my 3rd Favorite game of 2010 and even ahead of games I loved so much and had a long history with each franchise, FF XIII and GT5. Brilliant game that deserved all the GOTY awards it receieved last year.

Demon's Souls:  I had no idea.  The game scared the shit out of me, it forced me (Im serious) to break a $50 controller, it made me love and hate it at the same time, and I still have dreams about it from time to time (have not picked it up in at least 6 months).

Eternal Sonata:  This is one of the most creative ideas for a RPG that I can remember (up there with the ideas behind .Hack).  I cherished this game, it was beautiful and depressing, the music was wonderful and just pushed everything along.  Id love to dream like that.

Persona 3:  I had stopped watching anime for a good while until I picked up Persona 3.  The game was completely awesome and on top of that, got me back into watching anime.