Per Upgrade302's request I'm going to start this thread off with pictures of what I have on hand to help in the identification of Transmissions and Transaxles. The rest of you are going to have to fill in the gaps here guys!
Squidd get your camera out, and tell Sami to start dragging Trannies out!
Lets try and find all the more popular transmissions, point out their identifying features, locations of model numbers, parts breakdowns, etc., etc.