Originally Posted by Plankton

I've played on every console starting from Pong, but the game I always wish I still had, and obsessed over as a kid, was Pitfall. I made a map on paper of every single frame, and labored over it for days until finally beating it.

Pitfall - Wikipedia, the free encyclopedia!

Other notables:

http://en.wikipedia.org/wiki/Tank_(video_game)
Missile Command - Wikipedia, the free encyclopedia

...and most recently:

Max Payne - Wikipedia, the free encyclopedia

My GF even liked to sit around and watch me play that one, but that's pretty much where I stopped playing video games. Not enough time in the day these days.