I like big chins, probably because I've always wished mine were bigger. Here are some of my faves:
Poor lil' Tori Spelling:
The great John Cleese:
Australia's greatest opera star, Joan Sutherland:
And last, but most assuredly not least, the man who may have the world's largest jaw ever, B-movie tough guy Robert Z'dar (familiar to fans of "Mystery Science Theatre 3000!):