I voted for Lazerdiscs although I haven't watched mine for a while now. It's only been dvd and blu-ray since I got kids. Even if I could find time to go to the cinema I would most likely fall asleep half way through anyway.
The only way I watch movies now is in half hour sessions while feeding the baby.
I'm halfway through the secret world of Arrietty. It's pretty good so far, I wonder where it will go.