A mellow, Zen-like vibe trickles through this otherwise raunchy buddy comedy about genial real-estate agent Peter Klaven (Paul Rudd), who suddenly realizes on the eve of his wedding that he has no real male friends. In search of a possible best man, he connects with Sydney Fife (Jason Segel), a carefree soul whose antisocial tendencies bring spark to Peter’s life, and then some. Without knocking you over, this is very funny, thanks partly to a strong supporting cast (Rashida Jones, Jaime Pressly, Jon Favreau, J.K. Simmons, Andy Samberg and Thomas Lennon). A clever finale also turns the traditional, romantic-comedy wedding climax into an awkwardly emotional declaration of affection between two male friends.