Just found a great website run by Derren Brown and Kat Akingbade, called ScienceOfScams.com. They have posted a number of videos on YouTube, apparently showing some psychic or paranormal activity. They then explain how they performed the stunt through science. Here's an example
Head to the site for the rest of the videos. They also have a number of older videos, including some of James Randi and Penn & Teller debunking various paranormal claims (see the Factoid tab for these).
For anyone not familiar, Derren Brown is a brilliant magician, mentalist, and skeptic from the UK. (Yes, it's a bit of a man-crush). Go check out the site, especially if you believe in psychics, ghosts, or chi energy. You need a good dose of skepticism, and Derren Brown is the guy to do it.