1) “Sullivan’s Crossing” season-opener, 8 p.m., CW. Last season seemed to be ending cheerily. With her dad leaving, Dr. Maggie Sullivan would run his resort, start a clinic and be with Cal. Then Liam showed up, saying he’s her husband. (he’s shown here, right, with Maggie and Cal in the center.) Now more complications (personal and medical) pile up, in a show that manages to remain mostly sunny and likable.
2) “American Idol,” 8-10 p.m. today, ABC. This show finally has the field to itself. NBC’s “The Voice” ended early, allowing “Idol” to prosper: Tonight, the nine remaining contestants do songs from Disney movies; then viewers vote, trimming the field to seven.
3) Basketball. And this is why “Voice” had the short season: The pro playoffs have begun to absorb much of NBC’s time. Today, it’s Hawks-Knicks at 8 p.m. ET and Tinberwolves-Nuggets at 10:30; both games are also on Peacock, plus Raptors-Cavs at 7. NBC has more games Tuesday, Saturday afternoon and Sunday; with other networks in-between.
4) “Antiques Roadshow” and “The American Revolution,” 8 and 9-11 p.m., PBS. With America’s 250th birthday just 11 weeks away, PBS ramps up its coverage. Tonight, “Roadshow” focuses on Americana, followed by the return of Ken Burns’ masterful, 12-hour documentary. It will rerun on Mondays and Tuesdays for three weeks.
5) ALSO: At 8 p.m., AMC has the classic “The Wizard of Oz” (1939) and Fox has the game-show delight, “The 1% Club.” And at 8 and 8:30, CBS has “The Neighborhood” and “DMV,” both three weeks from their series finales.