Sarah Palin to do her Tina Fey imitation on SNL?

GOP vice presidential candidate Sarah Palin, whose been the subject of a withering imitation on "Saturday Night Live" by writer/actress/comedian Tina Fey, has agreed to appear this week on SNL. What makes it even more intriguing is the host of this week's edition of SNL is Josh Brolin, who stars as George W. Bush in director Oliver Stones's new film "W."

Meanwhile, Palin's running mate made up last night for his cancelled appearance on David Letterman's a couple of weeks ago. John McCain told Letterman, who has been highly critical of McCain since he cancelled an appearance on his show at the last minute on Sept. 24, "I screwed up" by not appearing and then withstood a barrage of questions from Letterman on Palin's qualifications and his campaign tactics that were as tough as anyting in the Presidential debates. When Letterman asked McCain if he thought Palin was qualified to lead the country, the GOP nominee replied: "In all due respect, one of the people I admired most was an obscure governor of a southern state called Arkansas and he turned out to be a fairly successful president. Ronald Reagan was a cowboy, no experience in international affairs. I think she has shown leadership."

After questioning McCain's and Palin's tactics trying to tie Democrat Barack Obama to former Weather Underground member William Ayers, Letterman asked McCain if he knew Watergate burglar G. Gordon Liddy.

"I know Gordon Liddy," McCain replied. "He paid his debt, he went to prison ... I'm not in any way embarrassed to know Gordon Liddy."

Letterman responded: "You understand the same case could be made of your relationship with him as is being made with William Ayers?"

Letterman also mentioned Ayers in his opening monlogue: "It was interesting last night during the debate. At one point, John McCain brought up Barack Obama's relationship with '60s radical William Ayers. And then Barack Obama brings up McCain's relationship with John Brown at Harper's Ferry."