Student unions are called the living rooms of college campuses. But UW-Madison?s new Union South is more like a playground. The opulent, $94.8 million building features a climbing wall, an eight-lane bowling alley, billiards, scores of flat-screen TVs, a 350-seat movie theater, a two-story fireplace, a wine and coffee bar and a banquet hall big enough to seat 1,500 people. The grand opening is set for April 15 with a series of events.