Yeah, I used to use a Psycho Shift Cresselia on PO, didn't have as much success though.
Pretty strategic battle except for the very last move, can't say any more about or I'll spoil it.
441 D/Cs and counting, baby!
*Contrary to popular belief, this is not a compendium of people who disconnect on Wi-Fi. See: Seinfeld, "The Comeback."