Here it is, this week's installment of our favorite online political videos. Dig in for a video from liberal commentator Jim Hightower, a new song from the folks who brought you Obama Girl, fun with tagging, an explanation of just what is going on in the Iowa caucuses, John McCain's celebration of his "I was tied up" remark, and more.

As always, your suggestions for the week's top videos are welcome. Send them to info AT techpresident DOT com.

The Politico launches a young voter-themed sub-site; Debate Porridge calls the campaigns on a Saturday and finds that most of them aren't working; interesting numbers about the effectiveness of campaigns' web effectiveness from the Politico's Ryan Grim and Compete.com; a puff piece about Joe Trippi tracks his rise to de facto campaign manager of the Edwards campaign; and Stephen Colbert passes Bill Richardson in a poll and more than 500,000 are members of a pro-Colbert Facebook group.