ScoreBig

Founded by veterans of Ticketmaster and various pro sports leagues, this members-only service aims to put unused seats under the butts of fans, saving them anywhere from 10-70% on tons of live events ranging from sports to concerts to Disney on Ice. Dallas-area offerings are heavy on games for the Mavs, Stars, and Rangers, and tix are still available for Lady Gaga, though telling your friends what you're up to will take some monster-balls.