I think Snakes on a Plane is one of the best movies ever made.
I'm not being sarcastic, I really like it. I watch it every few months crawled up in bed, laughing hysterically, scared witless and amused beyond control.
After each viewing, I carefully check under the duvet cover, under the bed and the dining table. If there are no snakes in sight I turn out the light and go to sleep. Inevitably I then wake up a few hours later, convinced something is crawling in my bed.
I'm not entirely sure why I put myself through this madness time after time. I suppose I quite like that for a few hours I can let go of all rational thought and just behave like a crazy person.
I should add perhaps that I only do this in private.