This ABC talk show started on Sunday nights, then was shuffled off to Saturdays when the audience failed to materialize. Tonight’s repeat installment was the show’s most intriguing to date, because the guest was Jerry Seinfeld. Whenever he appears as a guest on a TV show, he usually has a good time making fun of either the host or the program, or both. And why is he appearing on The Alec Baldwin Show at all? Quid pro quo: Last year, Baldwin appeared as a guest on Seinfeld’s Comedians in Cars Getting Coffee.