Yeah, I know, isn't is shocking that one of the best interviews with the candidates does not come from a news source, but a late night talk show host. Letterman was calm and persistent and raised all the issues and didn't let McCain off the hook.
Note: This is from CBS so there is an ad in the front.
If you need the backstory - and need a laugh, here's Letterman's reaction to McCain canceling on him a few weeks ago and "suspending" his campaign. It's a comp of every comment Letterman made, and of course, the clip from Katie Couric is hysterical.
If you haven't seen it yet, there's a great movie about the battle between Letterman and Leno for the Tonight Show seat after Carson's retirement. Kathy Bates gives a fearless performance, and it's beyond interesting and brutally honest. Check out THE LATE SHIFT.