In Paddy's Pub's five years of business, It's Always Sunny in Philadelphia has spawned everything from a major sports arena staple (Greenman) to a nationwide musical tour (The Nightman Cometh). With Season 6 around the corner, the question now is: What will the series' hardcore fans latch onto next?
"We never really know what's going to catch on. We wound up watching that Nightman episode from Season 4 and not really thinking it worked so well and then it just kind of took off," creator, executive producer and star Rob McElhenney tells TVGuide.com. "I had to talk Charlie [Day] into doing the Greeman thing. He didn't think it was going to work."
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