I nearly flipped out when I saw his name in the opening credits. For anyone who doesn't know who he is, he starred in Вор and Олигарх. He plays a Russian agent tracking down Ethan Hunt.

Also they speak tons of Russian in the movie with English subtitles. Instead of English with bad Russian accents that's so prevalent in most big budget Hollywood movies. I've never been this excited about an action movie before. And Tom Cruise's accent is actually pretty good. Add to that the fact that the movie is really good, and I'd have to recommend to everyone.