The perfect Joker would be a cross between Nicholson, Ledger, and Hamill. In the future when the technology exists to create ultra-realistic performances based on multiple footage inputs, I'm looking forward to waking up with my head thawed and put on a new monkey body, so I can enjoy the best of those performances combined into the ultimate Joker! And they'll have the ultimate Batman in it too, naturally... and dead Robin's suit will be explored more thoroughly in Dead Robin: The Prequel.