Our new Doctor Who special, on sale Tuesday 30 November, includes a list of 100 things we love about the series. This week and next we're revealing ten of them online
In 1977 documentary Whose Doctor Who , sound effects boffin Dick Mills demonstrated how to make the "special sounds" of a slimy alien by squelching this gooey green industrial cleaner in his hands in front of a mike, then slowing down the recording. Ever since, getting oil off your hands (which we do all the time, obviously - we're dead butch) has had a tinge of outer space to it.
Find out what the other 99 Things We Love About Who are in Doctor Who: A Celebration , on sale Tuesday 30 November.