Last night, Charlize Theron was a guest on 'The Tonight Show with Jay Leno' and we'll just assume you weren't watching Jay Leno's monologue. But for once, there was something of interest: Leno debuted a brand new clip from 'Prometheus.'

While Theron was ostensibly there to promote 'Snow White and the Huntsman' (which opens one week before 'Prometheus'), there was also some alien-pushing action going on.

We've known for a while and Theron has copped to the fact that her 'Prometheus' character Vickers is something of a villain in the story. Not as much of a villain as whatever evil lurks on the alien planet, but also not someone you'd want to mess with. We get a clear sense of that in this new clip.

The clip features Theron going toe-to-toe with Michael Fassbender's android David, trying to extract a key piece of information from him. One thing we'd wonder about after watching this clip, who exactly is the "he" Vickers is referring to? (In fact it reminds us of another Damon Lindelof-written affair - 'Lost' - that would obliquely mention a mysterious "him" over its later seasons.)

Check out the new 'Prometheus' clip below: