San Francisco Bay Area
jatbar.com | very good restaurant reviews with scanned menus
arthurhungry.com | various SF and Japan, Hongkong restaurant reviews
East and West Coast
menupages.com
themenupage.com
menupix.com | very good collection
restaurantplace.com
restaurantrow.com | restaurants all across the US
chowhound.com | not a menu site, lots of reviews and occasional menus
recipelink.com | restaurant reviews and some menu collections
East Coast only
http://web.mit.edu/afs/sipb.mit.edu/project/lnf/other/homepage.html
http://www.exit109.com/ mstevens/menulink.shtml
http://web.mit.edu/afs/athena/user/w/c/wchuang/www/menus/menus.html
http://www.people.fas.harvard.edu/ lipoff/miscellaneous/menus/
Country Roads Magazine
restaurantpix.com
Midwest
http://www.kcrestaurantguide.com
Outdated
amazon.com restaurants | used to have scanned menus