05/03/2013 02:05 pm ET

'Happy Endings' Finale Sneak Peek: Penny's Mom And Big Dave Are Back

The "Happy Endings" finale airs tonight, and there are many, many reasons (some of them mentioned in this ah-mah-zing list) we're hoping against hope that the gang returns on some network, someday.

The six-person "Happy Endings" ensemble is a well-oiled machine, but as you can see from the clip above, the comedy can incorporate good new characters quite easily. In the first of the finale Season 3 episodes that air tonight, Dave's dad Big Dave (Michael McKean) and Penny's mom Dana (Megan Mullally) arrive in town, and not surprisingly, Dana engages in some non-chalant oversharing. Thank goodness Penny (Casey Wilson) is used to that kind of thing from her eccentric mom.

"She is a force. She's so funny. She's so wacky and sweet," Wilson said of working with Mullally in a recent interview with HuffPost TV. "We have a really great synergy -- we're always on the same page in some way."

In the second of Friday's episodes, everyone is on edge as the Kerkovich family prepares for the wedding of Jane and Alex's even more frighteningly perfect sister, Brooke (Stephanie March).

The finale episodes of "Happy Endings" air on Friday, May 3 at 8 p.m. ET and 8:30 p.m. ET on ABC.

'Happy Endings' Season 3