Click here for the Mission Impossible III (or is that "3"?) trailer. It looks like once again it's personal for Ethan Hunt, and Philip Seymour Hoffman looks like he makes a very effective bad guy.
Nothing earth-shattering there, just a typical uber-action trailer... but I think you could overlay that Mission Impossible theme over just about anything and make it seem cool. :-)
J.J. Abrams of Lost and Alias fame has written and is directing.