Critic's corner

Tomorrow at 8, Disney
This little documentary was directed by Oscar-winner Barbara Kopple. The half hour follows the mounting of a stage version of the film "High School Musical" by a student theater company in Texas. Romances develop; friendships are tested; and lessons are learned about the power of the performing arts.

11:30 p.m., Channel 7
It'll be Tracy Morgantic.

Midnight, Channel 44
A Tom Petty and the Heartbreakeriffic concert.

9 p.m., HBO
He's getting McNultiacal.

Tomorrow at 9 p.m., HBO Signature
This excellent HBO movie won a few Golden Globe awards last week, for best actor, best supporting actress (Samantha Morton), and best TV movie. Written by Peter Morgan of "The Queen," and based on a true story, it's about an aristocrat who campaigns for prisoners rights in the 1960s. When he takes up the cause of a child murderer, the story plays like a British cousin to "Dead Man Walking."

Tomorrow at 10 p.m., VH1
In a word, Loblawful.

Tomorrow at 8 p.m., Channel 5
Your home could be very Penningtony.

Comcast
Almost as funny as it is hyperactive, the new computer-animated family comedy from Disney is luscious to look at and as fizzy as a can of soda popped open in your face. The story of a misfit boy inventor and his adventures with a whacked-out family in the future has a sunny retro sense and a heavy way with the Disney branding iron. (G; runs through April 22) - Ty Burr