Here's one I only just now caught wind of: lo-fi-turned-regular-fi indie-folk heroes The Mountain Goats will play this Friday night at the Rangos Ballroom in the University Center at Carnegie Mellon. Local regular-fi indie-pop heroes Donora open the show, and lots of heroes of different varieties will surely be in attendance.
As often is the case with CMU shows, it's free for CMU students, but $10 for non-students. You can't get presale; tickets will go on sale outside of the ballroom at 7:30 the evening of the show, so maybe camp out there or whatever.
More info on the event's Facebook page.