Modern-day warriors ...
First, a quickie review: I Love You, Man was lots of fun, absolutely nailing the awkward nature of what has been dubbed "bromance."
It isn't perfect, but from the Paul Rudd character's endless string of would-be cool phrases that come out as gibberish, to the fact that the inevitable "love triangle" -- between Peter (Rudd), fiancee Zooey (Rashida Jones) and new best friend Sydney (Jason Segal) -- never devolves into some bitter melodramatic war, this is an enjoyable flick with a solid message that doesn't get too preachy, unlike some others in the genre*.
Now for the coolest part: Music references! Mostly, just one -- Rush.
For those (like Zooey in the film) who don't know, Rush is something of a cult band -- only theirs is a huge cult. The Canadian rockers have been around since the 1960s and still are rolling (unlike some other bands that are still trying to kick it*). Everywhere they go they draw huge crowds. A few of their songs are locked into classic-rock station rotations.
Still, they're not like The Stones or The Who or Led Zeppelin in terms of widespread popularity, despite having, IMO, three of the best ... musicians ... period* ... manning their respective positions.
*This guy, especially.
But instead of lamenting their lack of mainstream recognition, let's celebrate their sizable place in I Love You, Man, with only one complaint: Could they not have chosen at least one non-radio song for the soundtrack? YYZ, maybe? Or an extended drum solo for Peart? I mean, Peart got a (NSFW) solo here, after all ...