Happy Endings has cast Michael McKean as Dave’s dad, who will become romantically involved with Megan Mullally as Penny’s mom. This is incredible, like when you try and get your divorced mom to date your best friend’s divorced dad so you two can be sisters and have sleepovers every night and play MASH and talk about boys and make snickerdoodles. Or it’s a smart way to generate storylines for two main characters who don’t have too many scenes together. That second one mostly, probably.