Sourced

• I'm curious about everything - even things that don't interest me.
  • Jacobs, A.J. The Know-It-All, pg 102
• What goes 0-300 in less than 2 seconds? Your mother on a scale.
  • Justinson, C.H.L. Down and Dirty, pg 32
• Don't tell me what you believe in. I'll observe how you behave and I will make my own determination.
  • "What I've Learned: Alex Trebek", Esquire, March 2003

Unsourced

• "I wasn't sunburned -but I was just suffering from heat prostitution"
  • -Speaking of his experience with heat prostration in Cairo to the live audience during a commercial break in the taping of Jeopardy