Almost never. I have done interviews for local, national and international news and other programmes (and know many others who have done this as well); I've never heard of anyone being paid anything for it. After one interview I asked a the reporter why they always invited a certain scientist as an 'expert' even on fields fairly distant from his actual expertise, the three reasons I was given were (1) he 'looks like a scientist' (that's a whole separate issue), (2) he lives near the studio, and (3) he doesn't ask for money.
The exception would be if you are filming a series as a presenter, in which case arguably you're not being paid as an academic at all but as a presenter. I know a few people who have made a partial or complete move into presenting scientific television series and of course they get paid just like any other presenter.