Right now I'd have to say it's between the Munsters' surf rock and the Wonder Years' intro...hrrm.
Munsters
http://www.tripletsandus.com/80s/tv_theme_wav.htm
Wonder Years
http://www.sitcomsonline.com/sounds/thewonderyears1991.wav
Munsters
http://www.tripletsandus.com/80s/tv_theme_wav.htm
Wonder Years
http://www.sitcomsonline.com/sounds/thewonderyears1991.wav