Kristen Wiig, Jon Hamm, and More Join the Giant Wet Hot American Summer Cast

Pine will guest star on the show.

Wiig has worked with a few of the cast members and will appear.

Schwartzman will guest star, which comes as no surprise given his experience with onscreen Summer camps.

Hamm will stretch his comedy muscles in a role on the show.

Glee's Mays has joined the cast.

Charles, from The Good Wife, is also confirmed to join.

Mad Men's Slattery will appear in the show.

Park, who recently played Kim Jong-un in The Interview and will be turning up in ABC's Spring comedy Fresh Off the Boat, has scored a part.

In a World's Lake Bell has joined the cast.

Huebel (Transparent, The League) will also appear.

The West Wing's Schiff is an interesting addition.

The League's Scheer seems like a natural addition.

If you loved Watkins in Trophy Wife, you'll love her here too.

Wet Hot American Summer was Banks's first movie role, and she'll be returning for the show.

If Benjamin's face doesn't look familiar to you, it's because he voiced the can of mixed vegetables that Gene talks to.

Black, who definitely got to make out with Bradley Cooper in the movie, will be back!

Before catapulting to fame, Cooper got his start on Wet Hot American Summer, and he'll return to reprise his role.

Friedlander will return as Ron von Kleinenstein.

Moreau, who played Katie, aka the hot girl, will return.

Poehler will be back as Susie, the head of the drama department.

Rudd will return and hopefully will still make out with Elizabeth Banks — even if she does taste like a burger.

Ryan will return to torment Ken Marino's virginal character.

Shannon will also be back.

Garofalo, who played the insecure camp director, will appear on the show.

Marino will take a break from his schedule on Marry Me to appear.

Revolution's Orth will be back.

Pierce, who played the astronomer next door, will be on the show.

Brooklyn Nine-Nine's Lo Truglio will turn up again.

Meloni will be back, perhaps talking to more inanimate cans of vegetables.

Miles, who has gone on to become the head writer at The Tonight Show Starring Jimmy Fallon, will reprise his role of Gary.

Showalter, who wrote and starred in the movie, will be back.

Director Wain will also have a part on the show this time. Nina Hellman, not pictured, will reprise her role of Nancy as well.