Tower Ticker | When “Roger Ebert Presents At the Movies” debuts the weekend of Jan. 21 in 192 markets, Elvis Mitchell of public radio’s KCRW-FM in Santa Monica, Calif., will not be discussing and debating new films with the Associated Press’ Christy Lemire.

Mitchell and Lemire were paired in the weekly public television show’s pilot, taped this year. But Chaz Ebert, vice president of The Ebert Co. and an executive producer of the the new TV venture with her Pulitzer Prize-winning husband, Roger, said by e-mail Tuesday that Mitchell is no longer associated with the program.

The show’s critics will be announced next week, Chaz and Roger indicated in separate notes.