I'm not much of a conference-goer, but this week I'll be at Semantic Technologies. This amusing site of recommended meetings lists it as a "Chess Club Conference", ie, geeky, which is only partly right -- it's actually part geeky and part marketing, where architecture astronautics meets the hype machine. I should get my cyncial slogan printed up as a t-shirt.
There is actually some pretty interesting stuff going in this space, especially in life science, and an awful lot of coporate hype. I will be attempting to separate out the two.