Voice legend June Foray returns in 3-D as Granny.

At one point, though, O'Callaghan realized that he had to have Granny in there (voiced by June Foray), and the only lyric that suggests anything was "She brings her broom down upon his back." But because he didn't want her interrupting the song, he had her napping. That is, until right before the lyric comes when she wakes up and starts hitting him on the back."You could see how I had to juggle a lot of things to arrive at what we did."

In terms of animation challenges, of course, the biggest difference here is that you have characters singing instead of the Road Runner/Coyote pantomime. "We have the fur and feathers again but we've advanced the technology a little bit," O'Callaghan continues. "But because you have fur and feather now, you have to be very careful when you're doing dialogue. You don't want the fur and feathers to mess up the articulation of mouth, so you have to get into grooming and watch how you handle the muzzle fur of Sylvester and the feathers around Tweety. But, likewise with Coyote/Road Runner, the main objective was they've gotta look like the same characters: you can't cheat them because now you have fur to deal with. At the end of the day, you have to go: 'That's Coyote/Road Runner; that's Sylvester/Tweety; and that was our main goal.

Bill Desowitz is former senior editor of AWN and editor of VFXWorld. He has a new blog, Immersed in Movies (www.billdesowitz.com), and is currently writing a book about the evolution of James Bond from Connery to Craig, scheduled for publication next year, which is the 50th anniversary of the franchise.