Here at the International House of Leaked Indy4 Footage, we pride ourselves in linking you to the latest and greatest of shoddy Youtube renditions of upcoming Crystal Skull video marketing.
Up now (temporarily, I'm sure) is the full theatrical trailer for the movie which will be attached to Iron Man and will likely be available for download on the official web site in a few days. It's probably recommend that you just wait until then when you can see the trailer in more than seven lines of resolution, but if you insist.
UPDATE (yes, by Tingler again, the Bringer of Doom): It's gone! It's ALL gone! Guess we're waiting until it comes up properly now!