My 2 1/2 year old loves this video, and has learned alot from it. I bought it for her because she's a picky eater. I think it has helped alot -- she's more willing to try new foods now (not that she always finishes them!)
I highly reccommend this video! Buy it for yourself, even if you don't have a picky eater in your house! It's that funny!
I think I'm not cool enough to enjoy the song clips, but if you and your kids enjoy spoofs, you'll like them: "Cereal Girl," Cookie monster rapping about "Healthy Food," and bologna, cheese, and bread singing "Telly's Lunch" (Brady Bunch Theme) I liked "Blueberry Mouth," a Leon Redbone style (?) tune about blueberry picking.
I don't know that it made any difference in eating behavior with my son, but he's a pretty good eater anyway. He enjoyed it, though: particularly the singing broccholi.