For those of you that don't know, there is the DotA 2 International currently in progress, full schedule on the link I provide with a live stream. Next matches are 14:45 but appeared to have started a game now and the full event lasts until Sunday!

This tournament will be the first time DotA 2 is shown in public, and will take place August 17th -21st at Gamescom in Germany Cologne. The International features the 16 best competing DotA teams in the world and the winning team will receive $1 million.

Link: Schedule, Brackets, Results and Stream