McDonald-Ohlmeyer In Rematch

Former Saturday Night Live comic Norm McDonald and NBC executive Don Ohlmeyer are at each other's throats again.

At Ohlmeyer's direction, NBC is refusing to run commercials for McDonald's new movie, Dirty Work. McDonald has been attacking the network and Ohlmeyer, its West Coast president, for firing him as the "Weekend Update" anchorman on SNL.

"I just don't think it would be appropriate for us to turn around and take a check for a movie that's promoting somebody who has badmouthed Saturday Night Live and NBC," Ohlmeyer said Tuesday.

McDonald fired back Tuesday night during an appearance on David Letterman's Late Show on CBS.

"I don't understand it at all," he said. "First of all, this guy, he's best friends with O.J. Simpson. ... Now, how could he not like me?"