Watching Joe 90 as a younger man I always preferred the arrangement played at the end. Still do. Clever to have the two arrangements, each one appropriate to the opening or closing credits. So - which one is in your head; or have I just helped add another?
Steve, it was the intro' (preferred due to the slight psych' tinge) but the outro works too. I best not put the two (intro/outro) together or I'll be listening to the Bonzo's all night... ;-)