FishbowlDC's Patrick Gavin grabbed an advance copy of this Sunday's Mark Leibovich piece in the New York Times Magazine with coverboy, Chris Matthews. From the quotes, it looks like it is sure to set off some fireworks within 30 Rock. "Not only is it a great read (typical for Leibovich), but if you're into media gossip...man," Gavin writes.

There's the Tim Russert complaints:

"A number of people I spoke with at NBC said that Russert can be disdainful of Matthews, whose act he often sees as clownish."

The David Gregory rivalry:

"Friends say Matthews is wary of another up-and-comer, David Gregory, who last month was given a show at 6 o'clock, between airings of 'Hardball.' It is a common view around NBC that Gregory is trying out as a possible replacement for Matthews."

And the Keith Olbermann beef:

"According to people at NBC, Matthews has not been shy in voicing his resentment of Olbermann. Nor, according to network sources, has Olbermann bothered to hide his low regard for Matthews, although when I spoke to him, Olbermann denied any personal animosity toward Matthews and told me that he appreciates his 'John Madden-like enthusiasm for politics.'"

John Madden?! Uh-oh...