Struggling musician Peter Bretter (Jason Segel) has spent six years idolizing his girlfriend, television star Sarah Marshall (Kristen Bell). But his world is rocked when she dumps him and Peter finds himself alone. After an unsuccessful bout of womanizing and an on-the-job nervous breakdown, he sees that not having Sarah may just ruin his life. To clear his head, Peter takes an impulsive trip to Oahu, where he is confronted by his worst nightmare: his ex and her tragically hip new British-rocker boyfriend, Aldous (Russell Brand), are sharing his hotel. But as he torments himself with the reality of Sarah's new life, he finds relief in a flirtation with Rachel (Mila Kunis), a resort employee whose laid-back approach tempts him to rejoin the world.
I'm somewhat on the fence about this movie. The funny scenes were absolutely hysterical. All of the characters were very well developed and played off of each other wonderfully. This applies especially to the rock star boyfriend. He was great. The movie also did an excellent job of portraying the break up emotions whether it be the victim, the supporting friends, or the dumper. It all seemed very genuine. Unfortunately, there were way too many dead spots that dragged. For every total belly laugh, there was blah stuff for a good 10 - 15 minutes. Everyone should also be forewarned about the full frontal male nudity of Jason Segel. I have been a huge fan of "How I Met Your Mother" (if you aren't watching it, people - you totally should be!) and am not sure how I'll be able to watch now fully knowing what his crotch looks like.
I would casually recommend people checking this out if they were interested. Its not a must see, nor an all out laugh fest, but it is a pretty decent watch.