When you're watching a movie musical, do you sing along out loud & if so what songs do you know by heart?

Don’t really watch any myself, well other than Wizard of Oz maybe. I do remember my mum watching & singing her heart out on numerous occasions. It got so bad the cat went out & shot herself :¬( My Fair Lady….Sound of Music…...Oliver…the list goes on & on. So, do you indulge in a bout of warbling when watching those movies… or perhaps not?