The Modern Family cast and crew are filming a vacation episode in Las Vegas prior to their bigger trip to Australia next month, and both Fred Armisen and Patton Oswalt are set to guest star with them in Sin City. According to TV Guide, Armisen will play “one half of a gay couple who’ll have fun with Mitch and Cam” named Langham, and Oswalt will play “a magician named Ducky Schindler who crosses paths with Phil.” The episode will air on ABC sometime this spring, but Oswalt’s already won this round for Best Modern Family Bit Character Name.