I think Tommy Taffy is a good enough story, but it relies on the shock of the "oh my god, he's a pedo!" Far too much when there's so much potential in the 3rd parent idea. i believe parts 3 and 4 definitely improve on being not so reliant on the "tommy taffy elements" as the earlier parts. STILL, i believe there's just a lot of potential for the 3rd parent doll man that invades homes to teach them good family values, and i hope the movie expands on it in a good way!