Conversation so far:
What were the regular segments of the Bloggingheads.tv show?
There is a frequent diavlog between the two co-founders of Bloggingheads.tv, generally related to politics in some form, that usually occurs on either Wednesday or Thursday.

Question: Who were the cofounders?
Self-contained rewrite: Who were the cofounders of the Bloggingheads.tv show?