I follow a lot of people, and sometimes they're all streaming great stuff at the same time and I have to pick one. But I often see things I'd like to watch later or the next day, and it's hard to find it in Past Broadcasts (or I forget about it until it's too late).

It'd be nice to have a "bookmark this stream" button on the Following page when someone's streaming something you want to check out later. Then you could easily keep track of stuff you didn't have a chance to watch when it was live.