Bloggingheads.tv (sometimes abbreviated "bhtv") was a political, world events, philosophy, and science video blog discussion site in which the participants take part in an active back and forth conversation via webcam which is then broadcast online to viewers.

Unregistered users are able to view all of the videos which are contained on the site, while free registration is required to comment on the individual discussions, or participate in the forums.

Most of the discussions posted to Bloggingheads.tv involve well known (or semi-well known) journalists, bloggers, science writers, scientists, philosophers, book authors, or other specialists in segments of current world events.

There is a frequent diavlog matchup between the two co-founders of Bloggingheads.tv, Robert Wright and Mickey Kaus, generally related to politics in some form, that usually occurs on either Wednesday or Thursday.

However, in September 2009, four high-profile science bloggers who had previously participated in Bloggingheads.tv discussions publicly distanced themselves from the site and stated they would no longer agree to appear in Bloggingheads.tv segments.

The scientists – Sean Carroll, Carl Zimmer, Phil Plait and PZ Myers – all criticized what they claimed was a policy by Bloggingheads.tv to provide a platform for the anti-scientific ideology, Creationism without an opposing point of view for balance.

The three regular hosts of "TWIB" were Bill Scher of Liberal Oasis, Kristin Soltis of the Winston Group, and Matt Lewis of The Daily Caller.

On October 18, 2006, a site redesign was launched, with a revised home page and improved functionality: ability to comment on diavlogs was added, and to participate in forum discussions.

[18] In January 2007, it was announced that cable TV pioneer and C-SPAN founding chairman Bob Rosencrans, with a loose network of others, would become an angel investor of Bloggingheads.tv.