I guess my favorites are Cool and Crazy, Portrait of Shorty, The Wild One and the Modern Sounds album with the Mulligan session on the other side. I'm also a sucker for just about anything in the Herman and Kenton catalogues that was composed/arranged by Shorty.
I was lucky enough to to see him during a brief renaissance he had over here in the 1980s (his "Blues Express" went to the top of the jazz charts) when he toured with our National Youth Jazz Orchestra. I saw them at the Davenport Theater, Stockport and the show included a beautiful new composition which he called "Davenport" (a name, of course, with great jazz connections), but which I think was never committed to record.