Thanks for starting this thread, David.
I have to thank our friend Helge (Sand) for making me aware of this extraordinary pianist about 10 years ago. I've since collected a number of his recordings, mostly trio work, along with a few quartet outings. I've always been a huge fan of piano trios, especially when the empathy is great among all three members. Enrico's choice of bassists and drummers adds to his appeal for me.
I find Enrico's approach to be extremely lyrical and melodic, while not overlooking rhythmic and harmonic possibilities. He reminds me somewhat of Bill Evans, though he definitely has his own signature.
Here are a few recommendations and a YouTube video.
Live at the Village Vanguard with Marc Johnson (bass) & Paul Motian (drums)
Live in Paris with Hein Van de Geyn (bass) & André "Dédé" Ceccarelli (drums)
The Night Gone By with Marc Johnson & Paul Motian
Alone Together with Philip Catherine (guitar), Hein Van de Geyn (bass) & Joe LaBarbera (drums)
http://www.youtube.com/watch?v=Gva_Sr_ccRYIf I had to choose one album to expose a friend to Enrico Pieranunzi, think I would choose
The Night Gone By, the same album I began with. It's utterly sublime.