Nine Inch Nails gave a captivating, and very sweaty, almost hour-long performance last night on PBS' Austin City Limits. The set that was taped back in November, complete with back-up singers, and it also included a fascinating interview with NIN frontman Trent Reznor. In a 14-minute chat, Reznor discussed his weariness with playing live TV (almost as if foretelling NIN's infamous GRAMMY set?), talked about why he almost quit performing altogether and detailed what fans can expect on their upcoming summer tour. Click here to see the entire show, and watch the interview below.