SPECIALS

If you like your terror with a slice of melody and a splash of dark humor, tune in for composer Stephen Sondheim’s “Sweeney Todd in Concert: The Demon Barber of Fleet Street” (8 p.m. KCET, 9 p.m. KVCR), featuring George Hearn, Patti LuPone and the San Francisco Symphony and Chorus.

SERIES

John de Lancie, “Star Trek’s” meddlesome “Q,” brings considerably more menace to his guest spot on tonight’s episode of the fantasy-horror series “Special Unit 2” (9 p.m. UPN).

MOVIES

Supernaturally bad things happen to good people living in a planned community in director Tobe Hooper’s 1982 hit “Poltergeist” (8 p.m. TNT). With Craig T. Nelson, JoBeth Williams, Heather O’Rourke and the utterly spooky Zelda Rubinstein.

Author Bram Stoker (“Dracula”) gets the Ken Russell treatment with the British auteur’s campy, creepy 1988 adaptation of “The Lair of the White Worm” (10:30 p.m. Sundance). With Hugh Grant and Amanda Donohoe.

SPORTS

The New York Yankees host the Arizona Diamondbacks in Game 4 of the World Series (5 p.m. Fox).