This is the fastest SNES emulator in existance. It features all SNES screen modes, as well as add/sub transparencies in 16 bit graphics mode (VESA2 support is required), mosaic effects, Super FX emulation (Star Fox, etc), DSP1 emulation (Mario Kart, etc), real time saving, and a really great GUI which lets you configure the emulator to your heart's content. This is the Windows port of ZSNES.