The most recent consoles from Nintendo. Gamecube is a 64-bit PowerPC console with more power than PS2 and ground-breaking Wii controls are the first implementation of future professional gaming. They are both emulated rather well.
Sub Forums: Dolphin, RESE, and 3 more.

First handheld console with 2 screens for gaming. Recent version of DS called DSi also 2 cameras for your purposes.
Sub Forums: iDeaS, DeSmuME, and 1 more.

First 64-bit and 4-player console with a lot of classic popular games. The main cheating base!
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32-bit portable console which features 4-player connection between players and connection with Gamecube
Sub Forums: VBA-M, VisualBoyAdvance