That's a lovely cat. I've never been able to get any of my cats (either past or present) interested in catnip though. I suppose that might be because they've got a preference for freshly-cooked chicken ;-)
:-))
They love it don't they?!...
My boy had a catnip feathered toy on a stick to play with a couple of days ago. He would not leave it. Kept lying down by it, hours after..
As for a hangover, they probably do, after large quantities in video!