This is everyone that me and my family quizzed him on:
Edmund Blackadder: Took him a lot of wrong guesses, and my own misinformation made me correct a few, but he nailed it.
Kermit the Frog: 12 questions, with the last one being 'Is he a muppet?'
Barack Obama: 12 questions, including 'hedgecat'. I don't even know what that means!
Frodo Baggins: Another simple one. 12.
Sakuya Izayoi: Not hard at all, although it had to ask one to differentiate between her and Youmu.
River Tam: Lots of stupid questions, then 'Older brother?'
Michael J Fox: 'Serious disease'. Had to do all 20, though.
JC Denton: I didn't know everything, but he got enough out of me to finish early.
Yahtzee Croshaw: Well, he sort of comes from the Internet... 14 questions to nail it.
The Genie: That was quick, but a lot of the questions were irrelevant.
Gaston: Hmm, not bad, not bad.