A couple NES patches that I think are worth adding:
1)
Ultimate Super Mario Brothers 2. This is a bugfix / graphics restoration for the FDS version of the game.
Grab it here. NOTE: I think the listed CRC32 for the ROM is wrong. I haven't to tested the patch with other versions yet.
2) Spanish translation for
Digital Devil Monogatari: Megami Tensei II, NES version. Based on the Englist patch by Stardust Crusaders.
Grab it here.