It varies, depending on the weather and the Earth's rotation, but right now my top ten are:

10. Tetris Attack: The most intense and competitive puzzle game I've ever played. No matter how bad things look, there's always a chance of fighting back and winning.

9. Final Fantasy Tactics: Better strategy games exist, but this was my first. It was simple and deep at the same time.

8. Chrono Trigger: My first foray into the world of RPG's. This one set the bar for me, and no game in the genre has beaten it, yet. It deserves its stellar reputation.

7. Mario Kart Wii: It took time for this one to grow on me, but in the end, this is Mario Kart's finest hour.

6. Resident Evil 4 Wii Edition: Even after playing several technologically superior games, this remake of a classic still ranks as one of the best action adventures of all time, for me. The best controls imaginable.

5. Gears of War 2: Don't judge me.

4. Metroid Zero Mission: Super Metroid and the Original Metroid made sweet, sweet Metroid love, and out popped this Metroid gem (do I have the record for saying Metroid the most times in a single post?)

3. The Legend of Zelda -Twilight Princess: In my opinion, this is the perfect adventure game. I loved every single moment.

2. Super Mario World: No real story. No amazing innovations. Just 96 worlds of the best gameplay the world has ever seen.

1. Metal Gear Solid 3: The best entry of my favorite series. The ending gets me every time.

-edit- made my list without reading anybody else's.  I'm surprised how many people share my opinion!  You guys are alright, in my book!

I'll post my top 5 of All time, top ten would require too much brain -power f6r a sunday evening

1. ocarina of time
2. lost odyssey
3. fire emblem radiant dawn
4. super mario world
5. mass effect