"Billie Jean" still stands the test of time out of all his songs.
From an old school perspective, "Rock With You" and "P.Y.T" have that old school soul vibe I really like.
Out of his newer stuff, "Butterflies" is a great song (written by someone from Floetry). Strangely enough, "Childhood" is a sadly endearing song and may give a glimpse at his somewhat distorted perspective.