So NBC has the big game this year and similar to what they do with their Sunday Night Football games they will be streaming the Super Bowl live. Other than ESPN I cant honestly say I know of any other network doing live sports events online.
And since my initial review of Sunday Night Football being streamed live on NBC they have continued to improve the UI (even if just slightly) and the performance. So as long as no one is streaming from Netflix, Hulu or trying to watch 5 hours of Adriana Lima you should be fine with NBC’s stream.
So to you NBC I say Kudos and Thanks! Now all of you other networks please start streaming more sporting events as well. And if you happen to be out and about during the game (perhaps out on a beer or chip run) check out the Super Bowl on your mobile device.