|Watch List for geoPet|
|Celebrity Ranker||Uses Google to find out how popular and sexy celebrities are, and shows images from Yahoo Image Search API. Finds celebrities which are similar in popularity and sexiness. Warning: not always safe for work.|
|Instant Video Mashup Generator||Instantly create mashups between two different Youtube videos.|
|Twitter Interesting Stuff Finder||Find interesting people and retweets by following the retweet chain.|
|Google Search Twitter Yahoo Image Search YouTube|
|celebrity photo search video fun social discovery|
I've posted some info on calling the Google API with PHP.