Season 5 of the comedy “It’s Always Sunny in Philadelphia” hits F/X tonight. To celebrate, the Paddy’s Pub crew thrilled fans of the show last night at New York’s Beacon Theater with a performance of last season’s memorable musical episode, “The Nightman Cometh.”

Photo courtesy Patrick McElhenney

Cast member Danny DeVito says this season, the show will tackle the recession and the Bernie Madoff headlines. DeVito’s character, Frank, is the father figure to the rest of the gang. When economic woes hit Paddy’s Pub, his character helps out. “So I dig into my secret capital,” says DeVito, “And I keep them afloat. But I got hit hard by a Ponzi scheme guy. So it affects everybody.”

The gang also gets into WWE-style wrestling – for a good cause. The characters aim to entertain the troops, but something tells me their USO tour won’t go smoothly. Star Glenn Howerton, who plays egocentric Dennis, gives me the scoop: done

“It’s Always Sunny in Philadelphia” premieres on F/X tonight at 10pm.