JFX Online has posted video from the set of Iron Man 2 with shots of the main cast and Garry Shandling (!), who apparently plays a role in the film (IESB.net was the first site to report this unlikely casting). You can watch the video after the jump.

Meanwhile, director Favreau has been posting on Twitter from the set, including images (like the one of his director's chair, above). "First day went great," he said on Monday. "I've never worked on a sequel before. It's like we picked up where we left off."

The video showing director Jon Favreau, Robert Downey Jr., Gwyneth Paltrow, Sam Rockwell and Shandling. Marvel Studios' anticipated sequel hits theaters on May 7, 2010.