Vice President Joe Biden?

Could Barack Obama pick Joe Biden as his running mate? Among those touting Senator Biden for the VP slot is Washington Post columnist E.J. Dionne:

I visited with Biden because he should be at the top of any list of vice presidential picks for Obama. Why Biden? In part because of where he took our discussion: Few Democrats know more about foreign policy, and few would so relish the fight against McCain on international affairs. Few are better placed to argue that withdrawal from Iraq will strengthen rather than weaken the United States.

Blogger Ezra Klein chimes in:

Biden is, arguably, the most effective voice Democrats have on foreign policy. And here's why: Joe Biden is an incredibly arrogant jerk. And that's exactly what Democrats need.

Klein revisits Biden’s now-classic takedown of Rudy Giuliani:

Biden, by contrast, laughed at Giuliani. He mocked him. "The irony is, Rudy Giuliani, probably the most underqualified man since George Bush to seek the presidency, is here talking about any of the people here," said Biden at one of the debates. "Rudy Giuliani... I mean, think about it! Rudy Giuliani. There's only three things he mentions in a sentence -- a noun, a verb, and 9/11. There's nothing else!"

Jake Tapper of ABC News last week wrote of "Biden's Shadow Campaign," in which he points out that Biden has been on the front lines in recent weeks, even though the senator hasn’t yet endorsed Obama.
There’s even a blog, ObamaBiden08, devoted to promoting Joe Biden as Obama’s pick for VP.