Having drunk my share of absinthe over the years, I can honestly say that it really does make me cackle like they do in this little clip...
http://www.youtube.com/watch?v=lqa62iiUwUI
I don't know of any other spirit that makes me cackle/carry on quite like absinthe, although no visual hallucinations, alas. But the cackling, most definitely. The very first time I tried it, I blogged about it (sorry, a long-extinct blog), and I was sitting there at the keyboard, cackling, trying to type. Oh, what a sight!
