If i was doing this (I'm still too lazy to get started on it), I would set up a couple of custom fields for what I see are the menaingful distinctions here.
#1, I would define for "Format". TV may be NTSC or HDTV (or PAL/SECAM for noncomformists). Similarly, I would define my films via DVD, HD DVD BDR, etc. Or, if you've somehow snagged DI files, 2k, 4k, etc.
#2, I would define for original release venue, which for lack of giving it more thought, I would call "medium". TV=TV, Film=Theatrical, Pod=Web, Commercials--what in the world are you archiving commercials for?
At any rate, this more or less falls apart pretty quickly, as soon as you start talking about made-for-TV movies, etc. So pay no attentiuon to the man behind the curtain.
#3, I would define for "Genre" across all media. So a film might be "suspense", just as a TV episode might. Although I would distinguish Episodic from Theatrical format.
Lots of luck, Chief. Please post your results, as well as any more Hopperesque photos.