I mean, all the new voice people sound like they're phoning it in. Matthew Broderick doesn't even sound like he's acting; it's more like he's just reading the dialogue in his normal voice.
Patrick and I have this theory that Jonathan Winters recorded his dialogue in one take while watching the film. (He always sounds extremely bored, like "When is this gonna be over?")
Patrick even thinks that Winters may have just ad-libbed some of the dialogue on the spot. (Why did the combined Calvert/Miramax rewriting require six writers? Three to not come up with something good, and three to come up with something not good?)