This weekend Damion and I got into a discussion over just what the heck a Macpherson strut suspension is (which is what his Honda has), and how it compares to a double-wishbone suspension (which is what my Alfa has). Did a little digging and found this nice site which, while not exactly well written, does give a good technical summary not only of these two types, but of pretty much all the different types of suspension that can go under a car. Live axles, swing axles, DeDion (which is what Ellen's Alfa had), and many more!

Update: Turns out Damion's Honda was the last year to have a double-wishbone front suspension. You learn something new every day...