Since my PC decided to commit suidide yesterday by frying it's CPU I'm having to use my 360 as an internet broswer until I get it repaired. That kinda sucks but the good news is that IE has recived some pretty substantial updates since the last time I used it.
The best of these being the YouTube support which now plays every single video despite asking you to intall Flash for a few seconds at the start, in fact it's quite conveniant since it cuts all the ads out. It also happens to play at full 720p with no performance issues either so the YT app is pretty much useless now. I'll be honest, it's not a bad little browser! It does most things you could ask for in terms of general internet use.
They have recently updated the YT app so it looks a lot better but i still have issues with it freezing every so often and crashing the Xbox so think i'll start watching through IE.