We've been waiting for months and it's finally here, the season premiere of "It's Always Sunny In Philadelphia" (FX 10:00pm). Yeah, the crew made it onto NPR yesterday and LAist might have been running some banner ads for the show but LAist interviewed co-creator Charlie Day back in the day, before the current round of promo. Other than the laughably pathetic final season of "ER", nothing will be funnier on Thursday nights at 10pm than......