Your nostalgic games - why?

teenage mutant ninja turtles on the NES i believe, it was the first "console" i had and it was flipping awesome IMO.

Battlefield 1943 and Games from Valve, they make me nostalgia

Alex Kid , great soundtrack, great game, very hard to play sometimes, great

Diablo 1 =p I played so much at school that I am very nostalgic

Counter Strike 1.6 and Need for Speed Underground, if I remember the name correctly. Those 2 were my very first games that I ever played on my PC. Ghost Recon series was also one of my most nostalgic ones. Good days.

Grand Theft Auto San Andreas SAMP
I do play it even nowdays
its quiet fun and good game
i dont care about the graphics though

I have huge nostalgia for any of the Pokemon games, especially when I think about online features like trading and all that stuff... Anyone else remember the union rooms from DPPT?
Come to think of it, usually the thing I miss most about games is the online communities that pop up. Nothing like being part of a game's community in its heyday.

Tony hawk pro skater 2-4. I play them still very often and just make me feel like I am a kid again playing them.

The old pokemon games for me. In particular FireRed. I remember saving up all of my own money to buy it. And had like 500 hours logged into it. I still have the game somewhere. I used to love breeding for some reason. Didn't know about IV's or anything though. I just have page after page of ponyta.

I would have to say runescape or MW2, those two were my favorite.