Transformers Lead Robot Illustrator Ben Procter has launched a section for the movie in the WEB PORTFOLIO on his official site. Within, check out the evolution of BumbleBee and Prime's designs, scrapped character designs, the Nokia, Mountain Dew, and Toilet bots, and much, much more...

Click the link above for all 99 photos and some cool quicktime videos... all narrated with technical jargon you won't understand!
Note: Use Internet Explorer 7 because his site isn't compatible with Firefox.

Here are some (ok most) of the images if you're too lazy to download them all from the official site.