Found via Digg:
The page is actually in German, but it has a thumbnail and author credit for each variant on the arcade classic. I had no idea Morgan Spurlock created a food hoarding Pac-Man variant (in Flash) for his Super Size Me Web site. Apparently, there are a lot of product tie-ins, as M&Ms and Mentos both have Pac-Men of their own (the latter involving German instructions and sheep). Enjoy!