A great, versatile drummer, who played with Toto, Boz Scaggs, and many others. I, myself, studied percussion privately with his father Joe Porcaro, also a famous session musician in LA, for a while when I was in college. Jeff died way too young. For examples of his very tasteful drumming, I recommend paying close attention to Toto's "Rosanna" and Boz Scagg's "Lido Shuffle." In the video below, Jeff explains how he came up with the "Rosanna shuffle."