TONIGHT'S MUST-SEES

"Frontline: Heat," 9-11 p.m., PBS. Slowly and painfully, Martin Smith looks at how we generate power. He visits 12 countries on four continents.

China, he says, is building two new coal-powered plants a week. It has passed the U.S. in carbon emissions — with India close behind.

Meanwhile, the U.S. hesitates. Smith finds some optimism for wind and nuclear power, less for clean coal or for the willingness of politicians to try large steps.

"Eli Stone," 9:01 p.m., ABC. Two guest stars have opposite luck tonight.

Ken Howard is trapped in a dreary court case — lives shattered over the symbolic issue of how a soldier will be buried.

Katie Holmes, however, opens with a big song-and-dance number — yes, Eli's visions are back — then has a romance. Eli is dazzled by Holmes, as most people would be.

OF NOTE

"House," 7 p.m., Fox. Dr. House keeps speculating on the sexuality of Dr. Remy Hadley (Olivia Wilde), whom he calls Thirteen. Now a woman she had sex with has had a seizure.

"Nova: Parallel Worlds, Parallel Lives," 8 p.m., PBS. Sure, many baby boomers consider their fathers to be distant and dull. Mark Everett — known as E, lead singer for the Eels — knew little about his dad. Still, this was no ordinary guy; Hugh Everett was a physicist whose theory of parallel universes is a favorite in science fiction. In this interesting hour, E digs into his father's life.

"The Shield," 7 p.m., FX. Shane realizes that his police colleagues tried to kill him; now he'll strike back. That brings fierce changes for Shane and for the tattered relationship between Vic and his family.

"Bizarre Foods," 4 p.m., Travel Channel. As Halloween approaches, people talk of eating creepy, crawling things. Andrew Zimmern shows how.

"Frank TV" season-opener, 8 p.m., TBS. Like many sketch-comedy shows, this is wildly erratic. Some bits are one-joke, at most; others are great. One good sketch tonight is a cartoon, with superheroes at a steroid hearing. Another has "Star Wars" characters go to a fast-foot restaurant.