Who is your favorite jazz pianist

While most of the pianist already chosen could qualify as my favorite, I'm suprised no one picked Bobby Timmons or Sonny Clark. In case you've forgotten how they sound I've included a few links.

Bobby Timmons worked with Blakey and the Messengers, he also wrote "Dat Dere" and "Moanin".

http://www.youtube.com/watch?v=gykp4f0Ac8c

http://www.youtube.com/watch?v=oLD3k7cE2ME

Sonny Clark wrote "Sonny's Crib" and his version of "Speak Low" is my favorite.

http://www.youtube.com/watch?v=ngSRvyY7IPc

http://www.youtube.com/watch?v=brmFaZfRZQE

As per Stewie above, Marcin Wasilewski is excellent, a current favourite.

One more vote for Duke.

Keith Jarrett
Thelonius Monk

I discovered Oscar Peterson years ago on a PBS studio performance with his trio. I am in complete agreement with the OP. I have heard many fine jazz pianists, but for me, he has no equal.