F-Zero X hacks work on real hardware so if you like that game you have hundreds of new tracks available!

Here are some full F-Zero X hacks. I haven't tried them all, but F-Zero X Climax is VEEEERY good.
http://www.emulation64.fr/?page=patchesAlso, I'm aware of the Zelda and Mario 64 maps on Goldeneye multiplayer. Is there any other cool ones? I would love the colors map from Conker's Bad Fur day, or maybe one from Turok
As
Kerr Avon said, you can find lots of new multiplayer maps and missions for GoldenEye and Perfect Dark at
http://www.goldeneyevault.com/If you are looking for multiplayer maps from other games in GE/PD I know there are a few Banjo maps done. Also, some maps from PD are available for GE too.
I was the one who did the Peach's Castle, Kakariko Village and Forest Temple maps. I plan on making more maps like those, but I'm busy with another project (a full GoldenEye hack in collaboration with more people). So until that one is finished I won't work on multi maps again.
Heh, Conker's Colors has been suggested by a few people. I'll have to take a look to that map again, although I have trouble ripping geometry from that game. If you have any suggestions you can write me
here or PM in this board.