Long available on iOS, UK TV network Channel 4 has finally gotten around to releasing its 4oD streaming app on Android. Similar to rival offerings from the BBC and ITV, the 4oD app allows UK-based users to stream from Channel 4's back-catalog of TV content, and view shows aranged by recommendation, TV schedule or category.
Like the 4oD web streaming service, you'll need to create a (free) account before you can get access to shows, and it seems streaming over mobile data is disabled for the time being. (You're also SOL if you're rooted, likely due to piracy fears.) However, the app itself looks pretty well-designed, tying elements of Android's "holo" design language in with C4's own styling. There's also parental controls, allowing you to block 16+ or 18+ content using a PIN lock.
The 4oD app for Android is available now on Google Play for UK Android devices running version 4.0 (Ice Cream Sandwich) or higher.