It’s a good concept, a movie about PEZ collecting. But the film is lacking a cohesive plot that ties it all together or makes you want to care about the people being profiled. Try sending them on the ultimate PEZ quest or some other mission. Give us a reason to cheer for them, or otherwise inspire another audience emotion.
The difference between this film and the one about the Donkey Kong
championship is that while both focused on slightly obscure hobbies and the (odd?) people who participate in them, the Kong movie had a storyline, an underdog for the audience to connect with, and a protaganist/villian.
PEZHEADS just had PEZ.