The calendar still says April, but the weekend television lineup screams May sweeps.
Sunday at 9 p.m., the big three networks scramble for viewers with high-profile movies. ABC (7)(3)(10)(42) has Sylvester Stallone in "Rambo III." CBS (2)(8) counters with a made-for-TV remake of Alfred Hitchcock's "Shadow of a Doubt," featuring Mark Harmon and Margaret Welsh. And NBC (4)(36)(39) throws out the first of its two-part movie, "Switched at Birth," starring Bonnie Bedelia, John Jackson and Ed Asner.
Elsewhere, in less-heated ratings competition, ABC's "Wide World of Sports" celebrates its 30th anniversary Sunday at 3 p.m. (7)(3)(10)(42) with a retrospective of the series' most memorable moments anchored by Jim McKay and Frank Gifford.
Sir David Attenborough hosts a three-hour documentary about fossils, dinosaurs and other evolutionary artifacts, "Lost Worlds, Vanished Lives," airing on TBS (cable) Sunday at 5 p.m.