I will go with N.
spins wheel
OMG! Bankrupt! 
You hit something! lol
AN-ONE(6) -AN(3) -OO-(4)
Letters not used:
I, U, S, B, H, G, D
Anyone think they can guess it yet?
Anyone can cook!
Ding ding ding!
ANYONE(6) CAN(3) COOK(4)
Letters not used:
I, U, S, B, H, G, D
You’re up, Dragon of Omnipotency!
What? No money? Not even a meeting with the lady who’s always standing at the Puzzle Board?
Here’s your next puzzle. Category: Pixar! XD
_ _ _ _ _(5) _ _(2) _ _(2) _ _ _ _ _(5) _ _ _ _(4)
I pick A
Woo, sorry, Loppy, no A’s.
_ _ _ _ _(5) _ _(2) _ _(2) _ _ _ _ _(5) _ _ _ _(4)
Inaccurate letters:
A
wryyyy?
E?
(then I’ll wait for others to post :p)
Jackpot. Three E’s.
_ _ E _ E(5) _ _(2) _ _(2) _ _ _ E _(5) _ _ _ _(4)
Inaccurate letters:
A
spins wheel for the next contestant
An Up DvD. 
I’m going to have to go with an N.
Woo, so close. Sorry, Disney Guy, looks like you have to stick with the theater. No N’s. 
_ _ E _ E(5) _ _(2) _ _(2) _ _ _ E _(5) _ _ _ _(4)
Inaccurate letters:
A, N
spins wheel
$1000 & a Toy Story 1 action game!
B?
Sorry, Loppy, no B’s.
_ _ E _ E(5) _ _(2) _ _(2) _ _ _ E _(5) _ _ _ _(4)
Inaccurate letters:
A, N, B
spins wheel
A Mr. Incredible cup!
C?
Sorry, woody, no C’s.
_ _ E _ E(5) _ _(2) _ _(2) _ _ _ E _(5) _ _ _ _(4)
Inaccurate letters:
A, N, B, C
spins
A Presto poster.
uh…F This is a hard one!
J??
T?
Woo, congrats, M.O. Hope you like the poster. 1 T.
_ _ E _ E(5) _ _(2) _ _(2) _ _ _ E _(5) _ _ _ T(4)
Inaccurate letters:
A, N, B, C, F, J
spins
A black Pixar t-shirt. Free size.
uhh W!