O (2001)

"As played by St. Paul's Josh Hartnett, Hugo is a fascinating, disturbing character."

O'Horten (2009)

"Quiet and lovely, its subtle pleasures reminded me of Erik Satie's 'Gymnopedie.'"

Observe and Report (2009)

"It's a comedy in which the humor is based on taking everything to the extreme, not only in terms of grossness, but also in terms of messing with our expectations."

Occupation: Dreamland (2005)

"Lets the soldiers speak for themselves in a series of interviews that reveal wildly divergent political stands, although pretty much all the soldiers voice doubts about why, exactly, they are there."

Ocean's Twelve (2004)

"Better than Ocean's Eleven."

Off the Black (2006)

"Throughout the film, there is a sense that the actors know a lot about these characters and that they believe in them. The result is a movie that we believe in, no matter where it goes."

Offside (2006)

"Despite its tiny story, director Jafar Panahi gives Offside a suspenseful, you-are-there quality."

Old Dogs (2009)

"Kids who suffer from progeria may be able to relate to Old Dogs, but it's hard to imagine anyone else fully appreciating it."

Old School (2003)

"Old School is liable to please anyone who, like me, thinks the idea of Ferrell performing a rhythm gymnastics routine is sheer genius."

The Omen (2006)

"Wanna know a bad omen for a horror movie? When it spends an hour or more trying to decide what kind of horror movie it's going to be."

Once (2007)

"The perfect movie for people who love music."

Once Upon a Time in Mexico (2003)

"We are meant to be amused by the film's bloodthirsty willingness to do anything to get a jolt or a laugh out of us, just as we were in The Wild Bunch, and I was amused."

One Bright Shining Moment (2005)

"An effort to secure former Sen. George McGovern's place in history, and it does a pretty good job."

One Hour Photo (2002)

"Watching One Hour Photo, you think about the people you don't know but who are part of your life."

One Night at McCool's (2001)

"A clever idea that isn't executed cleverly enough."

Only Human (2006)

"The secret to Only Human's appeal is that the silliness is performed matter of factly, so it becomes a new, cracked definition of normal."

Opal Dream (2006)

"The main attraction of Opal Dream is its warm portrait of a family."

Open Range (2003)

"[A] relaxed, beautifully photographed Western."

Open Water (2004)

"A nasty piece of work that effectively raises the creepiness bar ... but the premise is limiting."

The Original Kings of Comedy (2000)

"For about 3/4 of its length, The Original Kings of Comedy feels like the funniest movie of the year."

Orphan (2009)

"As much fun as it is to follow Orphan's improbable developments, there is also a dark undercurrent that lingers with you afterward. It's that troubling theme that takes the movie from good to almost great."

Osama (2003)

"Although its story is horrifying, Osama wisely makes its points through irony and understatement."

OSS 117: Cairo, Nest of Spies (2008)

"Every single second of O.S.S. 117: Cairo, Nest of Spies is fun, and I'm talking about the opening credits, too."

The Other Man (2009)

"It was directed by British theater director Richard Eyre, who knows how to line up the shots but not how to make us feel the compulsive hunger that drives Peter to the brink of a very tidy, stiff-upper-lip breakdown."

The Others (2001)

"Its pleasures are subtle and suggestive -- it sticks with you because it knows that the scariest things are the ones you can't see."