One of the best demonstrations I've seen is the way that LCIs are taught now to demonstrate the door zone hazard and how to deal with it... This is the way I teach it in traffic skills classes, at any rate:

http://www.youtube.com/watch?v=1TQ7aID1jHs

And then you have two-door sedans...

http://www.youtube.com/watch?v=9YixMuZpm88