Don't allow yourself to sleep for a week or so. Completely legal (not entirely safe) and I guarantee you'll be seeing all manner of crazy stuff. Don't drive - or operate heavy machinery. Fasting might help too, just don't over do it.
On a trip to France in High School, I was forced to stay awake for 45 hours due to travel and jet lag. I experienced some fascinating delirious effects including an episode where I yelled at this guy who was approaching me, seeming not to care that he was going to run right into me. I yelled at him right in the hotel lobby. However, someone pointed out that I was actually walking towards a mirror. Wow. That was one freaky occurrence!
Nah, it has no other effects other than making your dreams REALLY vivid. It takes a while for the stuff to get round your system so you wanna take it on an empty stomach in the morning. As far as side effects are concerned - I've had none that are noticeable besides feeling it slightly in my stomach if I don't grind it finely enough(it's basically dried wood). Another name is African Dream Root. Xhosa tribes in South Africa used it to speak to their ancestors and supposedly find answers to questions in their lives, but I'm not experienced enough with it yet. Only taken it for about a week - but it definitely works. REALLY vivid dreams that I can remember clearly in the morning.