Connie Sellecca

It follows that the host of TV's "Entertainment Tonight" would be big on entertainment. So it was no surprise that Sunday, when he appeared at the Celebrity Theatre as a keyboardist, composer and bandleader, John Tesh would work so hard to be entertaining.

Four new movies premiere on TV this weekend, including an ambitious four-hour biography of George Wallace and a family film starring an Oscar-winning actress, Diane Keaton. Keaton makes a rare TV appearance in the Disney Channel's "Northern Lights," Saturday at 7 p.m. She plays a New York sophisticate who comes to the small New England town of her late, estranged brother to collect her inheritance--which turns out to be her brother's 9-year-old son. Gary Sinise, who played Harry S.

Brashly predicting it will win next season's ratings race, last-place CBS on Friday announced a fall schedule of eight new series, including comedies with Twiggy and Redd Foxx and a weekly hour revue with Carol Burnett, who was swiped from NBC. CBS, with such hits as "Murphy Brown" and "Designing Women," was the only network to increase its overall prime-time rating in this past season's closely bunched network race.