After Peter Klaven's (Paul Rudd, "Forgetting Sarah Marshall," "Role Models") proposed to Zooey (Rashida Jones, TV's "The Office"), the girl of his dreams, the friends and family circle around them begin to notice that Peter doesn't really have any male friends.
The film starts off slowly, then hits its stride when Peter meets Sydney (Forgetting Sarah Marshall's Jason Segel.)
Segel ("Forgetting Sarah Marshall") plays Sydney Fife, a Venice Beach layabout who Peter meets after a series of "man dates" and poker nights have gone spectacularly awry.
The definition of Hollywood’s new leading men, Rudd and Segal complement each other very well, with I Love You, Man their third collaboration together, after Knocked Up and Forgetting Sarah Marshall.
And then there's Jason Segel (2008's " Forgetting Sarah Marshall "), a charming up-and-comer who has the unlucky misfortune of portraying the movie's largest miscalculation of a character.
Segel - a gnarly, Vince Vaughn type with the social ineptitude of a Will Ferrell - appeared in Apatow's TV show "Freaks & Geeks" and wrote and starred in "Forgetting Sarah Marshall," which Apatow produced and which also featured Rudd.