David Letterman wants to stick with CBS's "Late Show" through his contract -- and maybe longer -- as rival Jay Leno prepares to surrender the "Tonight" reins next year.

"The way I feel now, I would like to go beyond 2010, not much beyond, but you know, enough to go beyond. You always like to be able to excuse yourself on your own terms," Letterman said in an interview in Rolling Stone.

Letterman, along with Chris Rock and Tina Fey, is featured on the comedy-focused cover of the Rolling Stone issue out Friday.

Letterman, 61, questioned why NBC is proceeding with its plan to remove Leno, who consistently tops the late-night ratings. Conan O'Brien will take over "Tonight" next June, with Jimmy Fallon moving into O'Brien's "Late Night" chair.

NBC is angling to keep Leno, 58, with NBC Universal but the late-night king has indicated he's ready to jump ship. Eager NBC competitors are prepared to help him make the leap. (Associated Press)

The first poster for "Zack and Miri Make a Porno," the Pittsburgh-shot Kevin Smith film, will be seen only in Canada, according to the Entertainment Weekly Web site.

The film debuts next week at the Toronto International Film Festival and is due in theaters Oct. 31, but the poster shown at ew.com hasn't won approval for U.S. theaters.

Smith, who had to trim the movie and appeal to the MPAA ratings board to overturn an NC-17 rating, is quoted as saying, "When you've got the word 'porno' in the title, naturally, the marketing materials are gonna be scrutinized more closely by the MPAA. I understand they've got a job to do, but c'mon ... this image isn't that dirty; they're both fully clad."

Stars Seth Rogen and Elizabeth Banks are seen in side-by-side images with sexual implications left to the imagination.

Christina Aguilera has become the latest musical act to release an album exclusively through one retailer.

The multiplatinum singer announced yesterday that her greatest hits CD "Keeps Gettin' Better -- A Decade of Hits" will be released only at Target. The CD, out Nov. 11, will feature two new songs as well as re-recorded versions of "Genie in a Bottle" and "Beautiful."

Aguilera is following a growing list of acts who have struck exclusive deals with retailers. Wal-Mart has had huge success with similar deals with The Eagles, Journey and Garth Brooks. (AP)