3Styler for Facebook lets you search for videos; send invitations to watch videos to friends; create your own video searching profile; manage playlists. Winner of AOL Video mashup contest.
Your Mashup not listed on ProgrammableWeb yet? Tell us about it and get listed.
Animated GIF Creator
flightwise (formerly fboweb.com)
Echoes - Kazulo
Google APIlity Library
Yahoo! Search API Tutorial
Ruby Library for Truvea
Creating a Facebook photo album with Adobe Flex
Perl library for Facebook
Pyfacebook: Python library for Facebook
Official Facebook .NET Client Library
APIs, mashups and code. Because the world's your programmable oyster.
Executive Editor, ProgrammableWeb. Author, Map Scripting 101. Lover, APIs.