I'm gifting my friend's child a handheld emulator and loading it up with games. It's capable of playing things pretty much up to Nintendo GameCube (It's even running Twilight Princess, though it studders in some areas).
I've got pretty much everything that exists for NES, SNES, N64, as well as a couple dozen games for Genesis. I never had a Sega Saturn or a PS / PS2 growing up though and I'm wondering what I should grab for those, as well as some more obscure GameCube titles if there are any I should know about.
Here's your chance to wax nostalgic about some old games and help ensure they make it into a kid's present. Even if I have the game already, I can still throw suggestions into the "favorites" list and make them easier to find.
The N64 Kirby side scroller was a lot of fun
Rogue Squadron was a good time if the kid likes Star Wars
Can't go wrong with Ocarina of Time or Paper Mario either. If they like Paper Mario you might be able to get them into classic JRPGs like Chrono Trigger and FF7