TiVo Guide Week of December 13, 2010 *spoiler alert*

"How I Met Your Mother" Lily and Marshall receive shocking news that prompts the gang to reflect on their own lives; Robin gets a new job; and Ted begins carrying out tasks as Punchy's Best Man. Alex Trebek has a cameo. Monday at 8 on CBS.

"Mariah Carey: Merry Christmas to You" Mariah Carey performs songs from her second holiday album, "Merry Christmas II You," including "Oh Santa!" Taped at the Orpheum Theatre in Los Angeles. Monday at 9 on ABC.

"The Good Wife" Alicia tries to get a stay of execution for a death-row inmate. Meanwhile, Peter prepares for his first debate in the state's attorney race. Tuesday at 10 on CBS.

"Charlie Brown Christmas" In the Emmy and Peabody-winning animated cartoon from 1965, the gang mounts a holiday pageant as Charlie Brown bemoans Yuletide commercialism. Also: "Prep & Landing: Operation Secret Santa," a short featuring the prep-and-landing elves on a covert mission to Santa's office, with Betty White providing the voice of Mrs. Claus. Thursday at 8 on ABC.

"Burn Notice" Brennen attempts to blackmail Michael into killing government agents and joins forces with another player to strengthen his strategy. Thursday at 9 on USA.