SNES9x GX is a Super Nintendo emulator for the Wii based on the PC emulator SNES9x 1.53. The GUI is powered by libwiigui.

Based on SNES9x 1.53
Wiimote, Nunchuk, Classic, and Gamecube controller support
Multi-tap support, up to 4 players
SNES Superscope, Mouse, Justifier support
Cheat support
Auto Load/Save Game Snapshots and SRAM
Custom controller configurations
IPS/UPS patch support
SD, USB, DVD, SMB, Zip, and 7z support
Autodetect PAL/NTSC, 16:9 widescreen support, filtered/unfiltered video modes
Turbo Mode - up to 2x the normal speed
Zoom option to zoom in/out
Open Source!

4.2.9 - January 14, 2012
More accurate pixel scaling (thanks eke-eke!)
Other minor changes