Linkalope uses the Twitter API to search for recently shared links on Twitter. The built in zeitgeist pulls the latest trends making it easy to search for sports, movies, tv, celebrities, and more.
Your Mashup not listed on ProgrammableWeb yet? Tell us about it and get listed.
flightwise (formerly fboweb.com)
Yahoo! Search API Tutorial
java-twitter - Google Code
Python Yahoo! Weather app for Twitter
Perl Wrapper for Twitter API
Update Twitter with Command Line Tools
APIs, mashups and code. Because the world's your programmable oyster.
Executive Editor, ProgrammableWeb. Author, Map Scripting 101. Lover, APIs.