Robert Downey Jr. stars as boozy, womanizing billionaire and inventor Tony Stark, whose abduction by terrorists leads him to build a high-tech, gadget-loaded metal suit and embark on a crusade to save the world and boost his healthy ego a bit more. Single DVD, $29.99; two-disc DVD and Blu-ray sets, $39.99 each. (Paramount)
"Forgetting Sarah Marshall"
Jason Segel plays a newly dumped chump by his girlfriend (Kristen Bell), a TV star vacationing with her new beau at the same resort as our heartbroken hero. Single DVD, $29.98; three-disc DVD set, $34.98; Blu-ray, $39.98; DVD comedy collection, $64.98; Blu-ray comedy collection, $89.98. (Universal)
"Taxi to the Dark Side"
This is a harsh examination of U.S. policies and practices on torture and interrogation in Iraq, Afghanistan and Guantanamo Bay amid the war on terrorism. Director Alex Gibney centers his chronicle on an Afghan cab driver who died in captivity in 2002. DVD, $27.98. (Image)