If this is true I find it interesting that these people are able to provide a higher quality video stream than Dish Network, DirecTV and Cable TV.
Most of them are, some of them are authorized streams from channels, but most are streams by people who don't have authorization to stream them.
Anyway regards to the raspberry pi itself, it's a really awesome device for shell stuff too, not just for a media center. If you know how a typical GNU/Linux system works then you'd have everything you need. Considering it's only an ARMv6 700MHz processor, I did put a real minecraft server on it one time and it handled about 4 players before it began lagging. It doesn't handle too much TNT though
There is also a raspberry pi version of minecraft if you're into it as well that can be played on the Pi since the graphics are pretty impressive.
I also sent two raspberry pi's to a data center in europe to be colocated, one running a mail server and the other a small web server lol, so all in all they're pretty fun devices