Mark Hamill to Guest Star in The Big Bang Theory's Season Finale

On Monday, CBS released the complete list of guest stars who'll be Sheldon (Jim Parsons) and Amy's (Mayim Bialik) wedding guests in the Season 11 finale of The Big Bang Theory, and there are some big names whose roles are shrouded in mystery.

Returning guest stars include Laurie Metcalf as Sheldon's mother Mary and Courtney Henggeler as his twin sister Missy, the latter of whom is making her first appearance since Season 1; John Ross Bowie as Kripke and Brian Posehn as Bert, the gang's CalTech coworkers; and Wil Wheaton as himself, Sheldon's frenemy. Lauren Lapkus, who's been seen on Orange Is the New Black but is perhaps best known as an incredible comic podcaster, will appear as comic book store employee Denise, who will be making her Big Bang debut in the April 19 episode (maybe she'll be Raj's [Kunal Nayyar] wedding date!).

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As previously announced, Jerry O'Connell will be making his first appearance on the show as Sheldon's older brother George Jr.

And that brings us to the first-time guest stars, whose character names and descriptions were not released. Guest stars include Kathy Bates, who starred in The Big Bang Theory co-creator Chuck Lorre's recently-canceled Netflix comedy Disjointed, and Teller, the silent half of magic duo Penn & Teller.

Oh, and Mark Hamill, who you may know as Luke Skywalker.

There are some notable absences, like June Squibb as Sheldon's Meemaw and Annie O'Donnell as Amy's mother. Maybe that part has been recast and Kathy Bates is Amy's mom and Mark Hamill is Amy's dad? Wouldn't that be weird! My real prediction is that he'll marry Sheldon and Amy.

In any case, it's gonna be a big, big party.

The Big Bang Theory's Season 11 finale airs Thursday, May 10 at 8/7c on CBS.

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