Sasha & Guy Gerber - WaveFront week
All I am not sure if I can even begin to summarize all of Sasha's accomplishments. He has been producing and DJ'ing for more time then some of us have been on this earth. His sounds has changed over this years but has always blown me away. Prog/Deep House, Prog. Trance, etc... its hard to explain as he always mixes things up. But he is in Chicago very rarely so I recommend you go, even if its a Wednesday :)
For extra icing on the cake Guy Gerber will be on warm up duty.
Sasha - http://www.residentadvisor.net/dj/sasha/biography
Guy Gerber - http://www.residentadvisor.net/dj/guygerber/biography