If you haven't seen any Pop Tarts commercials or Pop Tarts boxes over the last several months, you can get a feel for them here:
http://www.poptarts.com/promotions/poptarts/
I don't know about the rest of you, but I think they copied the style from Don Hertzfeldt, creator of "Rejected" and several other classic animated shorts. There's no mention of the Pop Tart ads on
Don's site, so I'm pretty sure he didn't do them. That pisses me off. Still, it's not quite as disingenious as when Michael Moore ran a Matt Stone interview in Bowling For Columbine followed by an animated short designed to look like it was done by Matt & Trey.