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'Million Dollar Password'
(8PM, CBS)
Two things we can't get enough of in primetime: game shows and Regis Philbin, which makes the return of this remake of the classic series a bright spot on the holiday TV schedule.

Reeg is back with a slew of celeb players who'll try to help regular Joes and Janes leave with stacks of cool cash if their word-guessing skills are top notch.

Tonight's celebrity partners: Emmy winner William Shatner and former 'Ghost Whisperer' star Aisha Tyler, while guests in the weeks ahead will include 'Golden Girl' Betty White, 'Amazing Race' host Phil Keoghan and late-night TV's most underrated star, Craig Ferguson.

'A Muppets Christmas: Letters to Santa'
(8PM, NBC)
A little song, a little dance, and, since Kermit and Miss Piggy are involved, even a little romance?

This newest Muppets special finds Kermie and Piggy, their Muppet pals and a slew of celebs banding together to help get the Christmas wishes letters of three children into Santa's hands.

As the Muppets trek to the North Pole -- despite Piggy's desire to head to a more tropical climate -- they meet up with a cab driver played by Whoopi Goldberg, a cranky security guard played by Nathan Lane, New York City mayor Michael Bloomberg and Beaker's girlfriend, played by supermodel Petra Nemcova. Take that, Leonardo DiCaprio.

'Christmas in Rockefeller Center'
(8PM, NBC)
Al Roker hosts and Tony Bennett, Harry Connick Jr., Beyonce, the Jonas Brothers, David Cook and Rascal Flatts perform, but the real star of this celebration is the 72-foot-tall Norway spruce that will stand in Rockefeller Center.

Tonight, Roker and the other celebs help flip the switch on the tree's thousands of multicolored lights, an event that officially marks the beginning of the holiday season in New York City.

In fact, this year's tree is such a symbol of the holidays that it's getting its own star: a 550-pound Swarovski crystal ornament that will serve as the tree's topper.