Pre-Edinburgh Comedy
I had the pleasure of seeing 5 different comedians over the last few nights at the Riverside theatre in Hammersmith. These are "practice" sessions for their Edinburgh gigs. Both Russell Howard and Colin & Fergus put on a good show, and I think we'll hear more of Russell. Chris Addison was also on - following his Perrier-short-listed gig last year - with his musings on science (and lots of other topics along the way) in a show called Atomicity. Highly recommended.
But my real favourite was undoubtedly Richard Herring. If you are a devout Catholic, a fan of Rudyard Kipling, deeply care for monkeys, and have a yoghurt dependency, you may wish to avoid this show. But I found it truly laugh-out-loud. For me, that's unusual! I mention Richard's site also because he's been one a long-time embracer of the internet. His "warming up" section is in fact a blog which he has updated daily for, I think, several years (and is available RSS)
If you're not easily offended, then catch him at Edinburgh!