If you're planning to check out The Avengers in IMAX 3D at midnight, you're going to get a bonus with the well-reviewed superhero flick.  IMAX has announced, "Everyone who attends the IMAX 3D midnight show of Marvel’s The Avengers on May 4th (the evening of May 3rd) at participating locations will receive a limited edition IMAX print exclusive to the 12:01 show!"  This includes mini-IMAX theaters like the one at Atlanta's Regal Atlantic Station.Hit the jump to check out the poster along with a list of participating locations, and click here for the extended TV spot that was released yesterday.  The film stars Robert Downey Jr., Chris Evans, Chris Hemsworth, Jeremy Renner, Tom Hiddleston, Cobie Smulders, Clark Gregg, and Samuel L. Jackson.  The Avengers opens in 3D and IMAX 3D on May 4th.Poster via IMAX's Facebook page.  Click here for a list of participating locations.avengers-imax-posterHere's the official synopsis for The Avengers:

Marvel Studios presents in association with Paramount Pictures “Marvel’s The Avengers”–the Super Hero team up of a lifetime, featuring iconic Marvel Super Heroes Iron Man, The Incredible Hulk, Thor, Captain America, Hawkeye and Black Widow. When an unexpected enemy emerges that threatens global safety and security, Nick Fury, Director of the international peacekeeping agency known as S.H.I.E.L.D., finds himself in need of a team to pull the world back from the brink of disaster. Spanning the globe, a daring recruitment effort begins. Starring Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner and Samuel L. Jackson, and directed by Joss Whedon, “Marvel’s The Avengers” is based on the ever-popular Marvel comic book series “The Avengers,” first published in 1963 and a comics institution ever since. Prepare yourself for an exciting event movie, packed with action and spectacular special effects, when “Marvel’s The Avengers” assemble in summer 2012. In “Marvel’s The Avengers,” superheroes team up to pull the world back from the brink of disaster when an unexpected enemy threatens global security.