I think John Sebastian WAS the Spoonful, just as John Fogerty was Creedence -- nothing against the other guys, but he was the only one that was critical to their sound or their success. I was a little young to see the whole band in concert, but I saw John Sebastian (with a backing band) at Babson College in the early 70's. Great show, with all the positive energy the guy is known for.Someone mentioned Woodstock, which was both a great career boost for John Sebastian, and a huge embarrassment. By his own account he was pretty heavily medicated, which he figured was okay because he hadn't expected to be playing at that particular moment (schedule change when another performer wasn't ready to go on). Still a good performance, but his altered state was pretty apparent.
Mbo, in addition to all the great Spoonful cuts, John Sebastian also wrote and performed the theme song from "Welcome Back Kotter". A true all-around entertainer.