James Randii is awesome!! He's been debunking them for a lifetime. Dude is old now. I heard he's pretty sick though.
I still have his epic book ; " Flim Flam"
I once pissed off this voodoo witch in the New Orleans French Qtr.
She was talking to the group I was with and kept claiming she had these "powers".
I looked her in the eye and challenged her to do something to me, right then , using her powers.
She eventually threatened to put some root curse on me and I laughed.
I told her, if she really had any powers, she'd smite me right then and there .
I told her not to wait , if she really had powers, go ahead and show me , right now.
She got pissed and I laughed in her face and told her ,I just proved you're phony and full of crap.