If you're on MySpace, you'll see the explosion of Fringe blogs going around. I recently came across some photos from opening night on the Six Characters blog:
There's also a very lenghty post on Michael Wanzie's blog about what he thought looked cool, but with a huge disclaimer at the beginning - "WANZIE has not yet actually seen many of these suggested shows". I have to say my list would be a fair bit longer, but I wouldn't tell you NOT to see any of those - check it out!
And last but in no way least - Mark Baratelli's blog is a fantastic, wonderful, over-the top experience every time you go there - especially check out the videos of "Little Mark". He's not in them, but they wouldn't be possible without him.