2x06: A Star is Peeved
2x03: The Lottery
2x02: Clowning Around
1x14: Twizzles Fizzles
1x13: Safe and Sorry
1x10: Dial 'O' for Oops
1x08: The Cold War
1x06: Mo' Sweater Blues
1x05: Duh Bomb
1x04: Mental Kel-Epathy