Vulture, New York Mag's excellent entertainment arm, has an iPhone app that's all about viral videos, songs, trailers, clips and more. It's like having access to what's hot in entertainment on your iPhone—it'll totally make you feel like you're in the know.
The app isn't a reproduction of Vulture's content but rather gives access to videos or pictures or anything that has the most virility. Viralness? Viralnessility? Something like that. For example, I just watched a hilarious Community blooper reel and saw Breaking Bad audition tapes. It's basically all the neat and hip and cool videos/pictures/posts/tidbits about the entertainment world. There's also a curated Editor's Pick section, the option to save posts to favorite for future viewing and of course, social network sharing options. Free. [iTunes]