Against a Maniac (Two Hands)

[lehighguy]

I'm playing against a maniac. He huffs and bluffs ALOT. But he does fold sometimes if he is convinced he is beat. Nevertheless, total maniac. I don't have stats, but to give you an idea:

VPIP: 75%
PFR: 40%

He's all in alot. The following are two hands I had questions about.

BB = $6
Hero Stack Covers
Villian (maniac) $800

Hand 1:
Hero has KK in CO

Hero raises to $30, villian (button) calls, SB calls, BB calls

Flop: J,9,9 rainbow
check, check, hero bets $110, villian raises all-in, fold, fold, hero ???

Hand 2:
Hero has ATo on button.
Hero open raises to $36, fold, villian BB calls.

Flop: J, 5, 2 rainbow.
villian check, hero bets $70, villian calls.

Turn: T
Hero bets $200, villian goes all-in, hero ???