Jason,
yes the old TVs can give you quite a whopper. I used to work on the old tube jobs and a number of time I got too close to the high voltage. They were designed to be fairly high impedance so that they couldn't really pump much into you for long. However, I did get the odd brown burn hole in my skin from those incidents.
The old console radios had B+ supplies well over 500V and they were bad to come into contact with.
All that said, for me to revive one of these old radios from an otherwise junk state, still gives me quite a thrill. I find it to be a relaxing and fascinating hobby.
