Yes, another new TV spot for The Avengers is now online.  This time Robert Downey Jr.’s Tony Stark leads a roll call of all the superheroes to remind casual television viewers understand just how many costume-wearing superstars are in this thing.Hit the jump to check out the TV spot, click here to watch the other TV spot released earlier today, click here for Steve’s interview with director Joss Whedon, click here for a new image of The Hulk, and click here for yesterday’s 60-second TV spot. The film stars Chris Evans, Chris Hemsworth, Mark Ruffalo, Scarlett Johansson, Jeremy Renner, and Samuel L. Jackson.  The Avengers opens in 3D on May 4th.Here’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.