How easily are people manipulated? How quickly can someone change a complete stranger’s will? Just how fragile are we, mentally speaking? A few videos from skeptic Derren Brown shows just how easily someone with skills can manipulate people.

• Cold Reading/Predictability
• Instant Conversion Part I
• Instant Conversion Part II
• Russian Scam
• How mediums work
• Voodoo

But by far, the best (a tie):

• Subliminal Advertising
• The Birthday Gift