Some days are so tough, you want nothing more than to grab a cold beverage and watch 30 Rock clips, official and otherwise. YouTube gets that, so they've added personalised "channels" to their TV/monitor-friendly, Android-controlled YouTube Leanback setup.
Head down to the menu bar in YouTube Leanback, then head left to the "Create Channels" button. You'll be asked to type in a topic for your channel, which is a bit different than a straight-up search—there must be videos tagged or titled around your topic.
For the right topics, YouTube Leanback seems pretty convenient, as the screenshot above shows. And for HTPC or Google TV owners, it's a great way to enjoy YouTube without having to search out each individual video in your interests.
You and Leanback - This Time It's Personal [YouTube Blog]