I got into Steely Dan about three months ago.  I'm a jazz guitarist, and my intro to the group came when I discovered that Kid Charlemagne had one of the three best recorded guitar solos ever.  I bought all the old records up through Aja and started listening.  Those records rank with the best recordings ever made, in my opinion.  I must have listened to Katy Lied about twenty times, and each time, I found something that I hadn't heard before.  Great melodies, great lyrics, great groove, and harmonies that clash just right.