The Final Fantasy films are a (very small) step in that direction.
What's funny is if you look at most animated films, the characters typically resemble the real actor anyway, even in cases where they're portrayed as animals or some other abstract. It seems to me that actors love doing voice-only performances, given the large number of superstar names that go into many of these animated films. Just go in the studio, read your lines, and leave. Pretty sweet gig.
Since we've got a virtual cast, now we need is a virtual audience
for those that want a theatre experience at home...
Simply ask all the kids on the block to come into your HT, spill drinks all over the floor and put their gum on the seats. Record them screaming in your backyard, and play that back with a boombox while the movie is going. Tell all your friends to call you every 5 minutes. Set your PJ 10 steps off focus. Crank the mids up on your receiver to ear-piercing levels and get 2 blown speakers for the fronts. Create a pendulum with a hammer on the end that continually hits the back of your chair, again, and again, and again. Lastly, make certian to cook some Orville popcorn, grab a can of soda, and then take a $20 bill out of your wallet and tear it up. NOW you've got that theatre experience at home!