I didn't get a chance to see the earlier matches, but I think Cloud9 could be a sleeper to win it. I was very impressed by Watson in the qualifiers and the rest of the team is playing incredibly well too.

And I really love seeing teams that ignore the meta and just do what they think is strongest. I think that makes the most fun and interesting Dota, and blindly following the meta makes it really boring. I'm cheering for them most, personally.