The most comfortable movie theater of all time probably has to be the Beanie Plex Theater in Kuala Lumpur, Malaysia. They've installed luxurious seats, which will make you never want to leave. You'll pretty much have all the comfort of staying at home, but with the bonus of an awesomely big screen in front of you.
The seats in the Beanie Plex are comfy fluffy cushions. The seats are also super roomy, so you can sprawl out as much as you'd like. I'm sure movie lovers everywhere would enjoy this kind of seating, but you better not be someone that falls asleep easy though, because you're sure to zonk right out if you plop down in one of these.