IBM's Watson super computer serves up stiff competition to its human challengers on Jeopardy. Ash-har Quraishi speaks with a computer scientist from Northwestern University about what the contest means for Artificial Intelligence. Learn about Watson

Jane Addams and her fellow reformers understood the social value of art and its ability to break down barriers and uplift people. On the Art Beat, find out how Jane Addams' Hull House was an incubator for early Chicago artists. Hull House Museum Text of Jane Addam's book Twenty Years at Hull House Corbett vs. Dempsey gallery

This week on Chicago Tonight: The Week in Review, the latest polls are showing mayoral frontrunner Rahm Emanuel pulling away. Cook County Board President Toni Preckwinkle is victorious with both State's Attorney Anita Alvarez and Tom Dart's budget battles. The Washington, D.C. meeting at Transportation Secretary Ray LaHood's office between airline officials and Mayor Richard M. Daley didn't get very far. There's a controversy brewing over the city's blizzard clean-up priorities. And to a chorus of boos, the Bulls' Carlos Boozer returns victorious to Utah.

More than 50 years after his tragic death, Buddy Holly continues to thrill many fans. Eddie Arruza talks with author Gary W. Moore about his new book: Hey Buddy: In Pursuit of Buddy Holly, My New Buddy John and My Lost Decade of Music, a story of the author's personal discovery of why the rock-and-roll pioneer continues to amaze. Moore's website

T-minus six days until the most romantic day of the year. Are you ready? If not, don't start stressing just yet. "Check Please" Host and Master Sommelier Alpana Singh is here with Valentine's Day wine and beer picks.

Eight times a week, heavyweights at the Steppenwolf Theatre clash over the question: "Who's Afraid of Virginia Woolf?" On the Art Beat, Chicago Tonight looks at the art of war, as engaged by a husband and wife named George and Martha. Steppenwolf Theatre online

Find out how the negative response to Groupon's Super Bowl ad featuring Tibet will impact the Chicago company. Kris Kridel, of WBBM Newsradio 780, joins us to look at the week in business. CNN article about the ad

She helped make Second City an internationally known cultural institution. Long-time Second City producer Joyce Sloane died last week, at the age of 80. We revisit her 2005 appearance on Chicago Tonight. Sloane's Second City biography

We share recent comments and feedback from our Chicago Tonight viewers.

This week on Chicago Tonight: The Week in Review, the Blizzard of 2011 takes Chicago by storm, absolutely paralyzing the city. The third largest blizzard ever caused complete chaos on Lake Shore Drive, with hundreds of stranded drivers and abandoned cars. As the city continues to dig out, some blame city officials for not shutting down the historic thoroughfare sooner. Meanwhile, the mayoral race turns nasty with Carol Moseley Braun accusing opponent Patricia Van Pelt-Watkins of being a crack addict -- then apologizing to her opponent.

From the inside of a car on Lake Shore Drive, to a nearly naked romp in the snow; we look at YouTube to see how people across the region captured the blizzard on home video. Your blizzard videos

We share thoughts and comments from our Chicago Tonight viewers.

We meet a Chicago artist who helps people transform their old tattoos and scars, and sometimes even their lives. Jay Shefsky reports. Read more on the story Sacred Transformations website

A theater company from the Republic of Belarus is making international headlines by standing up to the authoritarian rule in their homeland. We speak with one of the company's founders, along with the artistic director of the Goodman Theatre about the efforts to lend them a hand.

This week on Chicago Tonight: The Week in Review, the battle is over. Mayoral candidate Rahm Emanuel stays on the ballot with the Illinois Supreme Court's unanimous decision. An Appeals Court stops Gov. Pat Quinn's $31 billion capitol plan. Convicted former Chicago Police Commander Jon Burge keeps his police pension, despite his conviction for perjury and obstruction of justice. And the Bears defend their hobbled quarterback, Jay Cutler, against the chorus of criticism from other players and disappointed fans. Guests:

Cultural Connections: Weekend Events Need a good jolt in your life? Plunging with purpose into frosty Lake Michigan ought to do it! We preview what's going on and coming up in Chicago.