Edgold did state in his earlier post that it wasn't working in 1990, well before the digital switch.
One thing I saw as a kid that I really wanted was essentially the reverse of that. While that is a TV with a radio added, this was a giant ghettoblaster with a small (4" maybe?) tv built in.
Analog TVs aren't completely useless these days. They can be used to connect old gaming systems to, systems which don't work well with modern TVs (especially games with light guns), they could likewise be hooked up to VCRs, DVD players, cable boxes, or any other source (although that wouldn't be very helpful for a portable TV).
Beyond that though, you can actually transmit your own television signal for them to recieve. You can connect a transmitter to your cable box, OtA antenna, DVD player, or anything else, and have any TV within range be able to watch it. Here's one article I found from some guy who did it:
http://www.antiqueradio.org/HomeTVTransmitter.htm