As a technical achievement, it's impressive, and entertaining.
Not only are all three of these guys entertaining as hell as these characters, but they make them each funny, give them distinct voices, and make each character just mean but the likable and funny kind of mean.
The film stars Christina Ricci, Bill Pullman, Cathy Moriarty, Eric Idle, and Amy Brenneman, and also features the voices of Malachi Pearson in the title role as well as Joe Nipote, Joe Alaskey, and Brad Garrett.