On 7th Heaven (8 p.m., WB), Eric and Annie take drastic action to save wayward Mary from a life of crime. Ally hires Larry (Robert Downey Jr.) to defend her when she's sued by a born-again virgin on Ally McBeal (9 p.m., Fox). Robert's new girlfriend is young enough to be his daughter on Everybody Loves Raymond (9 p.m., CBS). On Roswell (9 p.m., WB), a green pulse from the sky swallows up most of the residents, leaving the aliens, Liz and a handful of others scratching their heads and asking, "What the hell was that?" Original Angel Jaclyn Smith makes a rare sitcom appearance as John's college girlfriend on Becker (9:30 p.m., CBS). The American Experience (9 p.m., PBS, check local times) presents "Return With Honor," a documentary in which American servicemen who were POWs in Vietnam recall their ordeals. A tragic accident that kills four teens takes an emotional toll on the cops, medics and firefighters on Third Watch (10 p.m., NBC).
Billy Campbell from "Once & Again" parts the Red Sea in the conclusion of campy biblical miniseries In the Beginning (8 p.m., NBC).
Raiders at Broncos (9 p.m., ABC)
Rosie O'Donnell (syndicated) Jim Carrey, David Alan Grier, Carole King
David Letterman (CBS) Samuel L. Jackson
Jay Leno (NBC) Arnold Schwarzenegger
Politically Incorrect (ABC) Lennox Lewis, Michael McKean
Conan O'Brien (NBC) Harrison Ford (rerun)
Craig Kilborn (CBS) Kevin James, Vertical Horizon
All times Eastern unless noted.