Lovely story from Karl's new girlfriend, an extra in the HitchHikers film.
She recognised MosDef's stand-in, looking sheepish at a train station. She asked him what was up.
Sadly, he explained that they'd been filming an amazing special effects sequence that day, where they destroy a caravan with high explosives.
Everyone on location had been ordered to turn off their mobile phones during the arduous set up and he'd forgotten.
His phone rang. The caravan blew up.