It is indeed a strange drug. I take it on occasions like nights before stressful events such as travelling, to make sure I am well rested the next day. Normally I'm quite an anxious person and suffer from insomnia, so this works wonders to calm my brain down and make me go to bed.
One of the weird side effects is that if I don't go to sleep and force my self to be awake, I get these quirky weak hallucinations, like the letters on my screen are 'wobbly' individually. Static images shift in dream like manners, like they're animated. It looks completely real but I know it isn't, and doesn't particularly impair me, just gives a slight mellow chill.
I can see the recreational potential in this drug, but for insomniacs it can be a godsend to have a small "you will fall asleep in 15 minutes" kill-switch on demand when you need it.