'The Avengers': Loki and Tony Stark face off in new clip

Two things strike us about this newly released clip from "The Avengers" featuring Loki ( Tom Hiddleston) and Tony Stark ( Robert Downey Jr.) chatting about their respective strengths.

First, Downey is an absolute natural for writer-director Joss Whedon's dialogue. In the clip (first posted by MTV) -- a longer version of the "I have an army"-"We have a Hulk" conversation featured in the movie's trailers and TV spots -- Downey captures Whedon's flippant-to-deadly serious tone effortlessly. It's a wonderful fit.

Second, we really like the fact that Tony, aka Iron Man, is wearing a Black Sabbath T-shirt. Nice touch by the costume department.

"The Avengers" hits theaters on May 4. Take a look at the clip above and let us know what you think.
Photo/Video credit: Marvel/Disney