I used to like "Catch The Wind" and he had a few others that were listenable -- "Jennifer Juniper" was harmless enough. But he did seem to become increasingly empty-headed as he went along, leading up to, as was mentioned, "The Continent Of Atlantis" or whatever the official title was. How about "I Like My Shirt." Not sure what hallucigen induced that one. Just thought of a few others -- "There Is A Mountain" and "Universal Soldier" and "Hurdy Gurdy Man."
Yeah, he just got smaller and smaller as he receded in the distance, off in the direction of loony land.
A minor nit--although Donovan covered it with great success, "Universal Soldier" was written by Buffy Sainte-Marie, I believe...