Well, I especially love Let Me Entertain You (even more than the Queen song of the same name which is also love).
Apart from it being a great track I once played a solo piano version at a friends wedding which is cool and my son played it in his rock band so I probably couldn't love it much more than I do now.
My second favourite (or equal favorite perhaps) would be Supreme. It's an amazing reworking of I Will Survive and is easily a great song in it's own right.
I rather enjoy Better Man (which I once played in concert) and Old Before I Die, but recently I've been listening to Let Love Be Your Energy quite a bit.
His take on I Wanna Be Like You is quite cute
His swing stuff is OK, but despite (or perhaps because of) being a bigband fan I don't think he quite hits the same standard he does with is "normal" work.