We have another one of those social media challenges where we can unveil exclusive content if we share enough to hit 100%. MTV.com has Tony Stark’s Arc Reactor, and we need it to power up to 100% to release a never-before-seen clip from the upcoming Iron Man 3. Just tweet #UnlockIronMan on Twitter or click here. We’re only at 27% so far, so get tweeting! Also, be sure to go see Iron Man 3 when it hits theaters on May 3rd.