Best 21 Sci-Fi Movies Must-Watch Released in 2011

Steve Rogers, a rejected military soldier, transforms into Captain America after taking a dose of a Super-Soldier serum. But being Captain America comes at a price as he attempts to take down a warmonger and a terrorist organization. Info on Captain America: The First Avenger / IMDB / YouTube

In the 1960s, superpowered humans Charles Xavier and Erik Lensherr work together to find others like them, but Erik's vengeful pursuit of an ambitious mutant who ruined his life causes a schism to divide them. Look into X-Men: First Class / IMDB / YouTube

A mysterious pill that enables the user to access 100% of his brain's abilities transforms a struggling writer into a financial wizard, but it also puts him in a new world with many dangers. Check out Limitless / IMDB / YouTube

A substance designed to help the brain repair itself gives advanced intelligence to a chimpanzee who leads an ape uprising. Learn about Rise of the Planet of the Apes / IMDB / YouTube

A soldier wakes up in someone else's body and discovers he's part of an experimental government program to find the bomber of a commuter train within 8 minutes. Get info on Source Code / IMDB / YouTube

In a future where people stop aging at 25, but are engineered to live only one more year, having the means to buy your way out of the situation is a shot at immortal youth. Will Salas is accused of murder and on the run with a hostage. Get info on In Time / IMDB / YouTube

The Autobots learn of a Cybertronian spacecraft hidden on the moon, and race against the Decepticons to reach it and to learn its secrets. Find out about Transformers: Dark of the Moon / IMDB / YouTube

During the summer of 1979, a group of friends witness a train crash and investigate subsequent unexplained events in their small town. Get info on Super 8 / IMDB / YouTube

In a near future where robot boxing is a top sport, a struggling ex-boxer feels he's found a champion in a discarded robot. Learn about Real Steel / IMDB / YouTube

Reckless test pilot Hal Jordan is granted an alien ring that bestows him with otherworldly powers that inducts him into an intergalactic police force, the Green Lantern Corps. Find out about Green Lantern / IMDB / YouTube

The relationship between a politician and a contemporary dancer is affected by mysterious forces keeping them apart. Explore The Adjustment Bureau / IMDB / YouTube

Two English comic book geeks traveling across the U.S. encounter an alien outside Area 51. Read about Paul / IMDB / YouTube

Aliens and their Guardians are hiding on Earth from intergalactic bounty hunters. They can only be killed in numerical order, and Number Four is next on the list. This is his story. Look into I Am Number Four / IMDB / YouTube

A spaceship arrives in 1873 Arizona to take over the Earth, starting with the Wild West region. All that stands in their way: a posse of cowboys and natives. Check out Cowboys & Aliens / IMDB / YouTube

Star race car Lightning McQueen and his pal Mater head overseas to compete in the World Grand Prix race. But the road to the championship becomes rocky as Mater gets caught up in an intriguing adventure of his own: international espionage. Get info on Cars 2 / IMDB / YouTube

Two sisters find their already strained relationship challenged as a mysterious new planet threatens to collide with Earth. Get info on Melancholia / IMDB / YouTube

A squad of U.S. Marines becomes the last line of defense against a global invasion. Learn about Battle Los Angeles / IMDB / YouTube

A group of scientists researching an alien spaceship found in the Antarctic come face to face with the ship's, not quite dead, occupant. Get info on The Thing / IMDB / YouTube

A warrior priest disobeys church law to track down a pack of vampires who have kidnapped his niece. Info on Priest / IMDB / YouTube

A teen gang in South London defend their block from an alien invasion. Read about Attack the Block / IMDB / YouTube

Tragedy connects a young woman and a shattered music professor as an exact replica of Earth is discovered. Get info on Another Earth / IMDB / YouTube