YouTube is good for more than just water-skiing squirrells and teenagers embarassing themselves (but who can get enough of either, really).  More and more florists are using YouTube to show off their wedding work.  Some videos are better than others, but you're not hiring these folks for your wedding video anyway.  There are some amazing designs shown in these videos.  If you're lucky, some of these great florists are in your area.  We'll try to keep a running list here until it becomes overwhelming.

Here are a few to start with:

Avante Gardens of Anaheim, CA - http://www.youtube.com/watch?v=x7ulaBIDOzI
Datura of Middletown, CT - http://www.youtube.com/watch?v=l4sNfe0WgCs
Kebbie Hollingsworth - http://www.youtube.com/watch?v=ioQBVdLZFPs
Stephanie's Flowerhaus - http://www.youtube.com/watch?v=56e5Aa4JcMo
Mitchell's of Orland Park, IL - http://www.youtube.com/watch?v=hr2t5De-Nbw
Everyday Flowers of Tustin, CA - http://www.youtube.com/watch?v=S9MIfd6okG0

Here are some which show the creation of wedding and event flowers:

Everyday Flowers of Tustin, CA - http://youtube.com/watch?v=LMPTJfcs_ww
http://youtube.com/watch?v=3fFXB6EFN5Y