I dashed home from the movie theater to catch Senator Obama's introduction of his VP choice, Joe Biden of Delaware. The two appeared at a rally in Springfield, Illinois. After listening to the two speak, I feel much better about the ticket now that it has materialized. I think Biden, though not a perfect candidate, will be an effective presence to challenge John McCain in the traditional running mate's role of attack dog, but he'll do so with humor and an affable personality. And he does round out the perceived shortcomings of his partner atop the ticket. I'll be very curious to see who McCain taps in a week's time.