I like Jim Parsons, I think he's a great comedic actor. That being said, when he does voiceovers for animated characters, it gets on my nerves real quick. Kinda like the recent chipmunk movies. Their voices gave me a migraine something fierce in the Chipwrecked movie.
I never understood the need for an animated version of a movie that everybody loved, but it's their money I guess. I only saw it once and don't need to see it again.