What's On Tonight: Las Vegas, Smackdown, Monk, Super Bowl ads

• At 8, NBC has a new 1 vs. 100, followed by new episodes of Las Vegas and Law and Order.
• CBS has a Ghost Whisperer at 8, followed by the special Super Bowl's Greatest Commercials 2007 and a new Numb3rs.
• FOX has a new Nanny 911 at 8, then a new Trading Spouses.
• There's a new Friday Night Smackdown on The CW at 8.
• PBS has a new NOW at 8, then a new Washington Week.
• TNT has the movie Drumline at 8.
• Sci-Fi is showing a Jake 2.0 marathon again tonight.
• Also at 8: TCM has Gene Kelly in Cover Girl, followed by Fred Astaire in Funny Face.
• At 9, USA has a new Monk, followed by a new Psych.
• At 9:30, Food Network has a new Giada's Weekend Getaways.
• At 10, Showtime has the season finale of Masters of Horror.
• At 10:15, AMC has The Towering Inferno.

Check your local TV listings for more.