Jason Segel will be in Judd Apatow's This Is Forty?

Apparently so, courtesy of Collider and Megan Fox, actually:

It looks like the Knocked Up spin-off This Is Forty will get getting another cast member from the original. Megan Fox posted a picture of her on the set in a swimming pool with co-stars Chris O’Dowd (Bridesmaids) and Jason Segel. As you’ll recall, Segel played one of the friends of Seth Rogen’s character in Knocked Up. He’ll be joining stars Paul Rudd and Leslie Mann who are reprising their roles as married couple Pete and Debbie in the Judd Apatow comedy, which Rudd recently said is a “companion piece” to Knocked Up and not a sequel.

Segel will also be starring alongside returning cast member Charlene Yi as well as Albert Brooks, Megan Fox, Chris O’Dowd, Lena Dunham, Melissa McCarthy, Ryan Lee, and Wyatt Russell. This Is Forty is set to open in December 2012. [Update: Apparently there have been set photos of Segel on set with Mann. I never saw those, hence this story.]

-Joey's Two Cents: I had always figured he'd pop up in this flick, but now that I know for sure, this is pleasing news...thoughts?

Judd Apatow adds John Lithgow and 2 non actors to his next film!

The Film Stage has more:

We told you last night that John Lithgow had already joined the cast of the next film fromJudd Apatow, which might be titled This Is Forty. (I would like to just be able to call it that and move on, really.) Now, THR has learned of two more additions to the movie, and interestingly enough, neither of them are traditional actors.

The two are Annie Mumolo and Robert Smigel, the former of whom co-wroteBridesmaids with its star, Kristen Wiig. Smigel is a name that you might recognize right away, thanks to his work on shows like Saturday Night Live and Late Night with Conan O’Brien. On that talk show, he created Triumph the Insult Comic Dog, who became one of the most famous figures in comedy from the past ten years.

His past association with Apatow comes through his co-writing credit on You Don’t Mess with the Zohan, but let’s hope this turns out a little better than that. Some might be worried about two people who aren’t normally actors having parts here, but I think that can be dissuaded for two reasons: 1. Apatow is very good at bringing out people’s comedic sensibilities, and 2. These will probably be smaller roles.

Melissa McCarthy joins Judd Apatow's next film!

The Hollywood Reporter has the casting news:

Melissa McCarthy, a breakout star of Bridesmaids, and Ryan Lee, one of the child actors in Super 8, are joining the cast of Universal’s untitled comedy project being directed and written by Judd Apatow.

Paul Rudd and Leslie Mann are reprising their characters of husband and wife from Apatow's Knocked Up in a new story by the writer-director-producer. Albert Brooks and Megan Fox are also among the cast.

Many of the character details are being kept secret but it is understood that Lee will play the son of McCarthy, a mom at the school that Rudd and Mann’s children attend.

Barry Mendel and Clayton Townsend will also produce the comedy, which at one point was working under the title This Is Forty.

McCarthy is riding high these days off of her raunchy work in Universal’s Bridesmaids, which has grossed more than $154 million domestic and was produced by Apatow. The actress, repped by CAA, Schiff Co. and attorney Mark Wetzstein, also stars on the CBS sitcom Mike & Molly.