I was thinking of the right way to phrase it, but Mark summed it up. When I think \"theme song\", I think of a tune specifically composed for the show, and usually runs about :30-1:30. Not just an edit or rendition of a pop single...unfortunately, it eliminates a few songs (in general, not from TV Guide); The Golden Girls, The Wonder Years, any of the CSI franchises, or Mad Men. For the former two, that used to be the exception rather than the rule.
Nowadays, since most theme songs rarely exceed :30, it\'s the norm to play the chorus of someone else\'s hit single. Meh. That doesn\'t mean they aren\'t great songs on their own, but I don\'t consider them as \"theme songs\" in the traditional sense either.
(looks at list) Okay, it\'s not as bad as I thought, although Dallas goes in the top 5 for me. IMO, it seems like the writers simply yelled out shows with popular themes, with no idea as to whether or not the song already existed.