I like to use lines from films too, one of my favourites is the 'funny how? like a clown?I amuse you' from Goodfellas.
Another one I use is when stuff goes wrong and I waggle my finger and say 'this is the business we have chosen'
My favourite tho is one me and my daughter use, when shes being a complete pain in the a** I say 'I'll get you my pretty, and your little dog too' I use the cackly old witch voice too, it's the line the old woman out of wizard of Oz uses when shes chasing Dorothy and her dog Toto

FH