Should Obama be more like Capt. Kirk? William Shatner explains (Part 2)

William Shatner is a Hollywood icon, with a colorful career spanning some 50 years. Now, at the age of 80, he's looking back at how he got to where he is.

He has written a memoir called "Shatner Rules: Your guide to understanding the Shatner-verse and the world at large."

When CNN's Ali Velshi sat down with him this week, the talk turned to politics.