BlogBimbo
Theme: Gathering of women who post scantily-clad pictures of themselves in front of bathroom mirrors holding digital cameras.

Most popular panel: “My Father was Mean to Me.”

BlogBohunk
Theme: Gathering of men who constantly post pictures of their abs.

Most popular panel: “My Mother was Mean to Me.”

BlogBotox
Theme: Gathering of people who blog about plastic surgery and/or constantly update their blog templates.

Most popular panel: “Eliminating age lines while Improving Adsense Click Throughs.”

BlogBust
Theme: Gathering of people who don’t really blog but rather post favorite links.

Most popular panel: “Conferences We Recommend You Go to Instead of This One.”

BlogBiatch
Theme: Gathering of people who gossip and make snarky comments about other bloggers.

Most popular panel: “We Could Have Been Dooce if We Had Really Wanted.”

BlogHex
Theme: Gathering of blog wiccans.

Most popular panel: “Where to Find the Best Glittery Unicorn Icons for your Template.”

BlogBreeders
Theme: Gathering of Mom and Dad bloggers.

Most popular panel: None.  The Moms are busy scarfing down martinis and the Dads are Googling old girlfriends.

BlogBored
Theme: Gathering of people who start every other post with “I’ve really had nothing to say lately.”

Most popular topic: “This Panel isn’t About Anything in Particular but we Needed to Fill Space.”

More about Blogher here.  And hell, here’s more about Bloghim.