There were lots of good moments where the film's cleverness surprised me. The character banter had more wit than anything I've seen in a while. Having said that, there were a few things that bugged me a lot: one of the exes breaks into song (ugh), Pilgrim waits by the door right after making an Amazon purchase, and there are a few parts where swear words are bleeped out. I thought all these elements pushed things too far, and because they weren't funny, they didn't carry enough weight to support themselves. There were also times when the film felt like it was a person trying really hard to be cool.
Despite its faults, this film left me with overwhelming fuzzy feelings of geekiness (it might have been the old-school Sega and Nintendo sounds scattered throughout). In the end, I liked the way it was written, and I thought it was much funnier than the "comedies" that have plagued theaters recently (Dinner for Schmucks, The Other Guys).
I definitely recommend seeing this in theater, especially because there isn't anything else coming out until the end of October (Let Me In). It's a sad year, folks. Better get your ya ya's out while you can.