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With the exception of one character (more later in this review), I found this movie filled with male, sophomoric humor. Having said that most of the females in the audience also enjoyed it; kind of an equal opportunity movie to offend all sexes equally.

Unlike most trailers that show all the humor in a 60 second clip, this movie will throw so many funny situations at you so quickly that you will be giggling non-stop for the first hour.

Then, the introduction of the Mr. Chow part - essential for the plot, but played WAY over the top by Ken Jeong - became distracting. Up to that point, Bradley Cooper, Ed Helms, Justin Bartha, and Zach Galifianakis carried the movie briskly and with real chemistry. Zach Galifianakis, in particular, was brilliant. Who is this guy???! The last 30 minutes were not as good as the first hour and I found the ending somewhat forced.

HOWEVER, everyone I talked with after the movie will be seeing it again. This is one movie that is as funny as advertised.

Of course, I will get flamed by those who find this kind of humor too low brow for their tastes. Hey, just know what you're getting into when you see this.

Humorous movie in every aspect.

I watched the movie at a preview screening at UBC, so the audience were all college students. Everyone I talked to so far had loved this movie.

The tale of how three friends tries to find the lost groom before his wedding after their crazy night in Las Vegas. The movie gets funny from the Las Vegas part right till the end. There is hilarious stuff in every other scene. Not to be missed, one of the best comedy of 2009.

The entrance of Chinese goon is Hilarious, will have you in splits. They have touched on all types of jokes especially the minor mention of the different sex (gay, interracial, beastiality) The only movie that I can think of that is relatively similar is Harold & Kumar. I recommend everyone to watch it (not for kids), you wont regret it.

Phil (Bradley Cooper), Stu (Ed Helms), and Alan (Zach Galifianakis) wake up in Las Vegas hotel room with no memory of what happened the night before during their bachelor party. The problem is they lost the bachelor Doug (Justin Bartha).

There's a tiger, a bunch of pictures, and a baby. All that is fun flashing lights, but it's the chemistry of the three that makes this movie. Zach Galifianakis' breakout performance is hilarious. But it means nothing if Bradley Cooper and Ed Helms wasn't there. Bradley is a great leading man, and Ed is able to balance out Zach.

Director Todd Phillips really had the group humming. He has built up a nice resume of funny comedies. Also Ken Jeong literally jumps out onto the world.

If there's a film that will be sold on word of mouth alone this summer, it's The Hangover. With a funny but unspectacular trailer, a plot (guys go to Vegas for bachelor party and crazy things happens) that seems overly familiar, and stars who are relative unknowns there's nothing to suggest anything hugely promising. But those who have seen it can surely testify that it's a 24-carat piece of comedy gold, for once you can believe the marketing moguls...we have been graced by the sleeper comedy hit of the summer. On closer inspection it shouldn't actually have been that surprising, Todd Phillips occupies the director's chair and his previous output includes such hits as Road Trip, Old School and Starsky and Hutch. 'The Hangover' though easily surpasses those by merit of providing regular and consistent laughs amidst backdrop of a frenetic and unrelenting morning after.

The problems most comedies face are that they have to put all their best laughs in the trailer, so by the time the film comes around the funniest parts lose their impact and the rest of the film is disappointing in comparison. This is a problem The Hangover sidesteps masterfully. Yes we know they wake up with no memory of what went before; there's a baby, a tiger, a chicken, a missing tooth, someone's married a hooker and (in an unsurprisingly bizarre cameo) Mike Tyson turns up...but these moments, albeit hilarious, aren't what make the film tick. The heart of the film is in the chemistry between the three leads; Phil (Bradley Cooper), Stu (Ed Helms) and Alan (Zach Galifianakis) are likable and identifiable enough for an audience to go along with events that could quite easily in another context seem ridiculous. Alan in particular is a character that could really grind your gears if he turned up in certain films, as part of the affable trio however he grows on you immensely.

This success may partly be credited to casting unfamiliar faces but the actors themselves deserve huge credit. Cooper may already be slightly familiar to some and is undoubtedly a star in the making (having been cast this week as Faceman in the new A Team flick), Helms is best known for his stint in the US version of the office, Galifianakis though has come completely out of the blue and it wouldn't be at all a surprise to see him follow a career path similar to Seth Rogen's post Knocked Up. The missing groom Doug (Justin Bartha) also deserves an honourable mention for slotting effortlessly into the group when around, it's a shame the plot requires him to go missing for the most part. There's also perfectly pitched cameos for Heather Graham, Jeffrey Tambor, Ken Jeong and best of all Rachael Harris who is magnificently vile as the hapless Stu's wife.

Phillips has no qualms puts his characters through the wringer, there's one shocking revelation after another as the people, animals and events they encountered the night before come back to bite them on the ass during the search for Doug. As the audience know as little as the characters do the reactions ring true, they suspend disbelief as colossally silly events are only matched in magnitude by the sound of laughs in the theatre. The Hangover never quite lets up - the laughs even continue way into the credits - so it should come as no surprise that a sequel is already being planned. Having come up with something so fresh here the producers will have to be careful not to suffer from a hangover themselves the second time around.

Verdict: Brilliant chemistry and a few plot tweaks make The Hangover better than you could possibly be expecting going in. It's funny from start to finish and is guaranteed to have you leaving the cinema with a smile on your face.

I remember seeing the trailer for "The Hangover" a few months before it's cinematic release and I remember thinking it looked funny, and also that they probably stacked the trailer with all the best parts of the film.

Turns out I was wrong. Way wrong. Todd Phillips is a genius. He has helmed possibly the funniest movie I have ever seen. Literally every scene is funny. There were many occasions I was hurting from laughing so hard. Me and everyone else in the cinema the three times I saw it.

Ed Helms, Bradley Cooper, Justin Bartha and Zach Galifianakis (who steals every scene he is in) are brilliant as The Wolf Pack Stu, Phil, Doug and Alan. Ken Jeong is instantly memorable as Mr Chow and who doesn't love Heather Graham? Mike Tyson's cameo is amazing. Rob Riggle's bit part is also fantastic.

A wickedly funny script by Jon Lucas and Scott Moore tells the story of a Las Vegas Bucks Night From Hell.

Just brilliant stuff. Just as funny now as it was fourteen years ago.