If anyone hasn't already checked it out, there's some live SC2 streams around the place. Some pretty amazing and some pretty ordinary players around
There's a list over at SC2 Armory:
Even better than streaming it watching replays via the Beta client...
Grab the beta client, then follow the instructions here.
Download some replays and enjoy. There's a good one of a Team Liquid guy vs. David Kim over at the TL website.