I have to say that I probably only saw this film because I thought it was the only semi-decent film playing on what is pretty much an off-week between the releases of Transformers: Dark of the Moon and Harry Potter and the Deathly Hollows, Part 2.
I thought this was a so-so comedy with some decent laughs spread throughout, but there wasn't really anything that caused me to bust a gut. Charlie Day, the most unknown of the three cast main cast members, is probably the one that shines the most (when he gets a chance to shine).
As for the three stunt-casted bosses, Kevin Spacey gets the most screen time and is definitely the most horrible of the three. Jennifer Aniston seems to be having fun with what is definitely the most raunchy role she has ever done. However, I think that the Colin Farrell was a bit wasted and I sort of wish he was used more.
Overall it was a mildly entertaining film that I somewhat enjoyed while watching it, but I probably wouldn't rush out to see it again.