Martin Starr and Bill Hader appear frequently in movies of the Frat Pack .
This group of young actors , consisting of Seth Rogen , Danny McBride , Jay Baruchel , Paul Rudd , Michael Cera , Jason Segel , Jonah Hill , James Franco , Craig Robinson , Martin Starr , Bill Hader , in addition to appearing frequently in films of the Frat Pack , frequently collaborate with each other .
Frat Pack