The trailer for I Love You, Man — a “bromance” in which Paul Rudd, lacking in the substantive male friendship department, seeks out the perfect best man (Jason Segal) following his engagement to the lovely Rashida Jones — is online, and I’ve decided it’s a winner.

All the dog crap stuff is a push — supposedly revelatory character humor forced into a box of test audience-approved crassness — but the rapport between all the major players here seems great. Segal’s schlubby vibe is a good fit, seemingly, for this sort of role (the edgy new pal), and Rudd scores with the same sort of smart, tone-appropriate yet still slightly canted delivery (as with “Deep — in my mouth” after Thomas Lennon’s kiss, and “C’mon!” after the walk-by belch) that’s been a hallmark of his comedic screen performances dating all the way back to 1995’s Clueless.

Commercial prospects will be partially determined by rating, but the R-rated Role Models has done $64 million and counting, so things look good for a mid-sized spring hit. Directed by John Hamburg, from a script by Hamburg and Larry Levin, I Love You, Man is currently slated for release on March 20, from DreamWorks/Paramount. It will also open the South by Southwest Festival on March 13, in Austin, Texas.