The brain quote is something my daughter and I say to each other quite frequently. I also like to quote "PAAAAAAAAIIINNN!!!!" from Devil in the Dark and "Ah doon't remembah!" from Wolf in the Fold (now known as "Evil!Piglet" in our household).

My other favorite line in "Spock's Brain" is McCoy's, "I knew it. I never should have reconnected his mouth."