As with many comedians, I didn't fully appreciate the Smothers Brothers until I saw them perform (a) live and (b) for more than the short routines you see on TV or hear on records. And once I did, it was a case of "I knew they were good but I never know they were this good."
Alas, Tommy has left us — but here's an hour-and-a-quarter show they did in 2006 at a place called the Casino-Rama near Toronto. It will probably cause you to say the same thing…