Tantric has released a new version of his emulator for the Wii, heres the details:

FCE Ultra GX is a modified port of the FCE Ultra Nintendo Entertainment
system for x86 (Windows/Linux) PC's. With it you can play NES games on your
Wii/GameCube.

-=[ Features ]=-

* Wiimote, Nunchuk, Classic, and Gamecube controller support
* iNES, FDS, VS, UNIF, and NSF ROM support
* 1-4 Player Support
* Zapper support
* Auto Load/Save Game States and RAM
* Custom controller configurations
* SD, USB, DVD, SMB, Zip, and 7z support
* Custom controller configurations
* 16:9 widescreen support
* Original/filtered/unfiltered video modes
* Turbo Mode - up to 2x the normal speed
* Cheat support (.CHT files and Game Genie)
* IPS/UPS/PPF automatic patching support
* NES Compatibility Based on FCEUX 2.1.3
* Open Source!

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|0O×ĝo· UPDATE HISTORY ·oĝ×O0|
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[3.1.7 - May 19, 2010]

* DVD support fixed
* PAL/NTSC timing corrections
* Fixed some potential hangs when returning to menu
* Video/audio code changes
* Fixed scrolling text bug
* Other minor changes

http://code.google.com/p/fceugc/