I can easily recommend this 3 CDs set:
Essential.
Also be sure to check out the BG small group recordings currently issued under Charlie Christian's name, such as:
But, as already pointed out, the 1935-38 big band stuff is the place to start--think "Sing, Sing, Sing" (with some nifty small-group material also thrown in for good measure):
http://www.youtube.com/watch?v=gzaVNwkoZqc...feature=related