Mr. Potato Head is my current favorite. I love an AA that can interact, sing, and has such full articulation (even moving eyebrows!). Second place would be the Carnotaurus in Animal Kingdom's Dinosaur. What an awesome beast. Speaking of awesome beasts, the Yeti was a great one until he got decommissioned. I also want to give a mention to Lincoln at Disneyland. Sit in the middle of the audience and you'll forget he isn't real.
The Jack Sparrow one in PotC is amazing. I literally was sitting there going "Thats just an employee pulling our leg!" It's truly amazing.
The Father in CoP gets my vote for most comedic. I was giggling the whole way through.
My list may change once I see the Potato Head. We did fast pass on that ride so we missed it completely. If only I had known that you couldnt even see it for a minute before I rode. I've seen youtube videos and he looks amazing!
But hands down, Jack Sparrow takes the gold right now.
When it was running, the favorite was the Yeti. I'm also a fan of the Jack Sparrow in POTC. Also, even though they don't do much, I like the Greek Math Teacher scene in Spaceship Earth, where one of the students is falling asleep (Got stuck there right after the latest redo). Reminds me of engineering classes in college, and the famous head bob.
Would have to be the Yeti on Animal Kingdom's Expedition Everest attraction. Honestly, any animatronic figure that can catch your attention in the middle of this amazing coaster attraction deserves the crown.
The newest Lincoln at Disneyland is simply amazing.
On the east cost, I am rather fond of Ben Franklin and Mark Twain in the American Adventure, except for that strange, zen handshake that they attempt near the end of their show.
I was very disappointed that I didn't get to see Mr Potato Head pull out his ear and put it back in. I had heard so much about this capability and I was really hoping to witness it, but after an hour in line, he never once did it. Never the less, he's a very cool animatronic.
I got to see the Yeti in non disco mode when they got him working for the VIPs who came to see the opening of Finding Nemo-The Musical. I have to admit, that was one impressive figure. When he reached down for your car as you passed underneath him, it was VERY convincing.
Sadly, I got to see him again a few months ago. It was sad to see him flashing away, looking like he was frozen in some sort of psychedelic disco police line up. What a waste.