First of all, welcome!
Someone mentioned your website last week as
the source of this type of info (I saw it on E.C.S.S. , the Spanish Sinclair newsgroup), and now we see you here.

I didn't know of any movies or TV shows where the ZX81 appeared apart from the IT crowed. When I saw the ones you found I said to myself "Wow!".
Here's some links that might have some information that you don't have yet, but sadly nothing about the ZX81. The websites are in Spanish, but you'll see that it's easy to figure out which computer or console appears in each movie:
http://microhobby.speccy.cz/cm/cmcine.htmhttp://www.zonadepruebas.com/modules/sm ... itemid=555I think I have another screenshot of the ZX81 in the first episode of the IT crowd. I'll see if I can find it for you.