Is done and is commonly known. Might not be perfect every time but obviously you can target a particular venue which increases your odds based on familiarity of the group of sitting judges alone.

In addition there appears to be other techniques which although not always successful increase your odds further.

More than just a little reading on the subject:

http://www.google.com/search?q=judge+shopping&sourceid=ie7&rls=com.microsoft:en-us:IE-SearchBox&ie=&oe=&rlz=1I7ADRA_en

Coyote