CALLING ALL DITTOHEADS: Will "Rush Limbaugh! The Musical" be another breakaway success a la "Rod Blagojevich Superstar?" Find out for yourself tonight when The Second City unveils its latest satirical take on politics and current events. It follows Rush's rise to the top of talk radio, and no doubt plays up the stumbles along the way. Watch out for cameos by the likes of Ann Coulter, Karl Rove, Donald Rumsfeld, Hillary Clinton and Barney Frank. 1616 N Wells St., 312-337-3992 $25
CIRCUS MEETS THE NIGHTCLUB: See why they call Beacher's Madhouse the hottest ticket on the Vegas strip when the tour hits Martini Park tonight. It's described as a sexy costume party combined with variety acts, dancers, side-show freaks, midgets, acrobats and djs. What more can you ask for? Oh ya, it's free! 9 p.m., 151 West Erie St., (312) 640-0577
STIMULATE THIS: The Social Stimulus Club always goes down on the first Wednesday of the month and benefits a different charity each time. This month the proceeds go to the Bear Necessities Foundation. Ten bucks gets you a round of cocktails and passed appetizers. Get there early, it's usually pretty packed. Lumen, 839 W. Fulton Ave., $10
