OK, so maybe a 2¼ hour documentary populated by 1980s computer nerds doesn't sound so hot, but actually for those of us of a certain ages this is really quite a fascinatingly engaging nostalgia trip. I was never into computer games as a kid, nor am I now, but my best pal at school (Paul) was what passed for an anorak back then and constantly raved about his ZX80, then a ZX81 and then the pièce de résistance with 48k memory and it's colour games - the Spectrum. That was the console that finally got us out of the local chippy which undoubtedly made much more cash from kids playing "Asteroids" tha...