Thanks and that's only the very tip of the iceberg. For example here are few first rate piano players who have not yet been mentioned.
The late great Jaki Byard, who played with Mingus in the early and mid 1960s. For a fine example of his group work check out "The Jaki Byard Quartet Live!" a fantastic live (duh!) date from 1965 which is one of jazz's real hidden gems. One of my all time favorite live recordings of anyone. Among is solo recordings the best one is "There'll Be Some Changes Made" from late 1972 and which has not been reissues on CD (boo! hiss!).
Another deceased piano giant is Mal Waldron, who like Byard, excelled in both group and solo settings. There are some many great Mal Waldron recordings that I have no idea where to start. Waldron had a very long career starting in the mid 1950s and going strong until his passing in 2002. His early work in the 1950s is more straight ahead but with the unique Waldron style peeking through. His mid 1980s group and solo recordings are all worthwhile.
Now on to the living. I don't think that Geri Allen has been mentioned. Give her 2004 recording "The Life of a Song" on Telarc a listen. I also recommend her latest recording "Grand River Crossings: Motown & Motor City Inspirations" and "Zodiac Suite: Revisited" by a trio called The Mary Lou Williams Collective featuring Allen along with bassist Buster Williams and drummers Billy Hart or Andrew Cyrille. This recording is a "bonus" disc since you get to hear Geri Allen very skilfully playing one of Mary Lou Williams most ambitions and successful compositions.
For those of you unfamiliar with any of these great pianists well then you are in for a real treat and for those of you who are familiar with their music it's time to get reacquainted with their greatness.