They've come from Down Under, they've come from the great white north, they've come from our own back yards, and they've come for one thing: world domination. Dad's Garage Theatre hosts this year's WORLD DOMINATION THEATRESPORTS TOURNAMENT, showcasing the best improv competition from around the globe. Terrapin Beer Co. helps keep the laughs flowing – the $35 "Pass and a Glass" special includes all six shows, a Dad's Garage pint glass, and one free Terrapin draft per show. Through Sept. 12. $8-$35. Thurs.-Sat., 8 and 10:30 p.m. 280 Elizabeth St. 404-523-3141. www.dadsgarage.com.