Project64 is a great, free Nintendo 64 emulator which can emulate a lot of the comercial n64 roms out there. Emulator meaning that Project64 creates an environment on your PC under
New emulator development found for the NDS. Its called IDeaS which the symbolic of Ideas and DS (obviously). The second best (after DeSmuME) emu progressing so far.
Dolphin is a Gamecube emulator. It also has preliminary support for Wii and basic Triforce emulation (this is pending a commit, and does not run games yet).
NO $ Zoomer is a utility that piggybacks on NO $ GBA, GBA and NDS emulator. It adds features that are not supported by NO $ GBA. Thus, in the display settings, you can enlarge the screen and even to full screen.