[quote name='lokizz']if youre going to throw in all jokers animated and live action Mark Hamill to me is the best joker followed by jack nicholson.[/QUOTE]
Maybe if we're just counting the voice, Hamil would be good. His body of work as the Joker surpasses anybody else, but it was all voicework. Ledger's voice had a Southern twang to it at times. Nicholson's voice was Jack Nicholson.
Nicholson? No. Batman was the best of that series, but he just seemed too gimmicky like the 1950s style Joker.
Ledger? He was like Alan Moore's Killing Joke.
Nicholson's Joker was and remains popular because Nicholson was playing him. If anybody else played that role, it would be viewed like Arnie's Mr. Freeze, Carrie's Riddler, Devito's Penguin or Jones' Two Face.