Russell Brand delivers something audiences don't expect. (YouTube)

"Get Him To The Greek" is one of those rare movies that leaves the audience wondering if they loved it or hated it, as they walk out of the theater.

The film delivers the sex, drugs and rock and roll that the target audience is hungry for, but not in the way that the audience is expecting, or comfortable with. The sex, drugs and rock and roll are surprisingly delivered with a love story and a message on the side.

The awkward packaging and presentation of the movie also gives off a vibe that says, "You've seen this before," but it is tough to tell where.

Exploited rocker Aldous Snow, played by irrepressible comedian Russell Brand, is caught between rock and roll and a hard place. He's been sober for seven years, and his junky girlfriend is getting tired of it.

When Aldous serves up a terrible album, bringing with it a searing spotlight and the stench of being a has-been, it's the last straw for his bored-to-death girlfriend. She dumps him, sending him into an instant and unholy tailspin, reverting Snow back to his old drug and alcohol addicted ways.

From beginning to end, the film does not deliver the goods in the expected manner. A disorienting opening scene leaves the audience back on their heels and never lets up. It's impossible to tell if the movie started out in development as a love story infused with R-rated hysterics or as an R-rated comedy looking for a way to take the edge off.

Regardless, the storyline is not the only unsolvable mystery.

The acting is also an enigma. Russell Brand gets to show his chops as Aldous Snow, the rock star made famous in "Forgetting Sarah Marshall". The sober sex addict audiences fell in love with in "Marshall" is replaced by a self-destructive sex addict who is destined to end up either dead, in a VH1 special or both. As good as Brand is as Snow, he delivers fewer hysterical moments than expected, even though he has good enough dialogue to work with.

The usually dependable Jonah Hill, as industry intern Aaron Green, shockingly also misses the mark in the humor department for most of the film, delivering many chuckle-worthy moments and very few laugh out loud moments. He also, for the first time in his career, is not given the best lines in the film.

That prestigious honor goes to Sean "Diddy" Combs, the lone bright spot, who nails his feature film debut (apologies to the movie Made) as music executive Sergio Roma. Line after line is on point and Diddy is just as responsible as the writers who blessed him with great lines.

Despite Combs' performance, "Get Him to the Greek" is only guaranteed to frustrate and confuse and very possibly, completely disappoint.