Links
ACMLM Board / ACMLM Board II
Two messageboards that share a variety of ROM hacking related information between them. Chances are they won't approve of your naked Mario hack.
Googie's ROM Hacks
ROM hacks by Googie. Lots of good stuff. Have a look, why don't you?
I-Mockery.com
Highly entertaining site with popular & hilarious ROM hack review section.
The Ray N. Experience
Website of Ray N., BHDN contributing artist.
RomHacking.net
Useful resource for utilities, tutorials and advice to help you improve your ROM hacking skills. Also hosts ROM hacks of a sort that fall outside the focus of this site.
Zophar.net
Probably the best resource on the web for emulators, utilities and the like.