"A Link To The Past" is the definative zelda game and is the best game of all time in my opinion (tied with Chrono Trigger)!

The original Legend of Zelda is be far the best in the series. To the this day if I have an extra hour in a day I will pull that game out a few times a year and re-beat the game. I have loved every Zelda game to come out minus MM (I never could get into that game for some reason), but I have beaten every other Zelda game twice and the original Zelda game probably 50+ times.

1. LttP - 2D sprite graphics hold up very well and can be challenging.  Need to buy it on VC.
2. OoT - Dropped from 1st after my last play through (made the mistake of trying to collect all of the golden skultullas).
   
3. MM - Very different concept which originally turned me off but I learned to like it.
   
4. LoZ
   
5. AoL
   

????. WW (currently playing) -The cell shading graphics holds up well today and the movements and animations are very fluid. The environment interactions and dungeon design are also very nice (only in the 1st dungeon thou). I've heard comments that there are a lack of dungeons and too much sailing which is a shame since currently this could easily be my favorite.

@rapsuperstar31 - MM starts off very slowly and takes a while to get into.  Starting out as a Deku kid really doesn't help matters.  However, once you get used to "Groundhog Day" effect it can be very enjoyable.

Blasphemy!!! It doesn't matter if you didn't play before 07'(Most 2D games are light years better than that of the current gen), heck yah haven't even beaten the game. Finish the game and your opinion will change.

I've tried finishing it 4 times, but it gets to dull every time (one thing is that 90% of the game lacks any challenge what-so-ever. The other 10% are awesome though).

I'll give it another shot (I have it on VC).

Since when have Zelda games ever been "challenging?"

 I'm fine with the 3D games not having a huge challenge (but I find them harder than most of alttp), as you kind of explore and enjoy the game. It gets a bit dull in 2D.

All the other 2D Zeldas (well, except for maybe Phantom hourglass) have a real challenge, either in puzzles or enemies. Link to the past has almost none of that.

The other Zeldas also keep a steady difficulty, whereas some parts of Link to the Past are just completely challenge-less, whereas some are as difficult as in the original.

(And let it be noted: I'm completely horrible at 2D games.

I take back my original statement, I had totally forgotten about Link's Adventure.  That one was rough.

As for the rest, they're not challenging... at all.

LttP is my favorite. I remember seeing screens in NP before the SNES came out and was real excited. The LttP comic in NP was pretty awsome as well.

LA is by far the best portable version though. The ending, combined with the music made me wanna cry as a kid. Great game. Plus you could steal from the shop which was clever.

I did really enjoy TP though, more so than OOT

the run down:
LttP
TP
LA
OOT
WW
LoZ
MM
AoL

Never finished the oracle games and only tried PH in store. Still wanna pick that up.