Marvel has released three desktop wallpaper, 2 for Captain America and one for Thor.

Thor stars Chris Hemsworth, Natalie Portman, Tom Hiddleston, Rene Russo, Idris Elba, Kat Dennings, Clark Gregg, Jaimie Alexander, Ray Stevenson, Joshua Dallas, Tadanobu Asano, and Anthony Hopkins.

Paramount Pictures and Marvel Entertainment present the epic adventure, “Thor,” which spans the Marvel Universe from present day Earth to the realm of Asgard. At the center of the story is the mighty Thor (Chris Hemsworth), a powerful but arrogant warrior whose reckless actions reignite an ancient war. Thor is cast down to Earth by his father Odin (Anthony Hopkins) and is forced to live among humans. A beautiful, young scientist, Jane Foster (Natalie Portman), has a profound effect on Thor, as she ultimately becomes his first love. It’s while here on Earth that Thor learns what it takes to be a true hero when the most dangerous villain of his world sends the darkest forces of Asgard to invade Earth.

The God of Thunder will hit cinemas in 3D on May 6, 2011.

Captain America: The first avenger stars Chris Evans, Hayley Atwell, Sebastian Stan, Tommy Lee Jones, and Hugo Weaving

The year is 1942, and Steve Rogers is a scrawny lad who desperately wants to fight Nazis for his country but can’t because he’s been deemed physically unfit. His fate — and his physique — is radically transformed when he signs up for Project: Rebirth, a secret military operation that turns wimps into studs using drugs and assorted sci-fi hoo-ha. There’s a love interest (Major Peggy Carter, played Haley Atwell), there’s a sidekick (Bucky Barnes, played by Sebastian Stans), and there’s the Red Skull (Hugo Weaving), Hitler’s treacherous head of advanced weaponry, whose own plan for world domination involves a magical object known as The Tesseract (comic fans know it better as The Cosmic Cube).

The film opens July 22nd, 2011.