"Marvel's The Avengers" -- succinct title! -- arrives in theaters in just over three weeks, which means it's time for the marketing to kick into overdrive.

In the 64-second segment, Stark and Loki have one of those mutually-assured destruction conversations that all heroes and villains seem to have in movies. The difference here is -- well, that none of those conversations ever referenced the Hulk. Also, Downey is pretty cool. Guy can play Tony Stark in his sleep!