What are some games you really enjoyed as a kid but after growing up found that they haven't aged well at all?

As some of you know I played Spider-Man 2 Enter: Electro this past week, and it was nowhere near as good a game as I remember it to be. The voice acting and dialog at times were cringe worthy (Spidey was all right, of course), the controls were largely unresponsive, Spider-Man was poorly designed to be slow as all hell making boss fights unfairly difficult, and the game was filled with glitches. I don't even think some of the levels were spawning the enemies.

Discuss.