Well, a couple of weeks ago, I finally finished the "Hooray for Hollywood" piece that I posted images of a while back when it was still a work in progress.
The finished piece is about 6' by 5' and I've got it hanging on the wall right now. Each "portrait" is approximately 12" square.
Starting from the top left corner: Cary Grant, Bette Davis, Spencer Tracy, Jean Harlow, Gregory Peck, Audrey Hepburn, Humphrey Bogart, Katharine Hepburn, Joan Crawford, Harpo Marx, Greta Garbo, Robert Mitchum, Marilyn Monroe, Charlie Chaplin, Gloria Swanson, and Clark Gable.
It took a bit longer than I expected (taking a few breaks throughout), but I started it back in June, so it was about 5 months in the making overall.
As I was working on it, I kind of made a game out of it as well. With a little effort, you can actually do a "Six Degrees of Kevin Bacon" thing linking everyone together. Mine starts with Gloria Swanson and ends with Cary Grant. I'm sure there are other configurations.
Anyway, here it is.