Encountering the Daleks is turbulent at the best of times but it was even more so for the Fourth Doctor during this poignant 1975 adventure which has stood the test of time as one of the most iconic adventures in Doctor Who history. In Genesis of the Daleks, our hero faces an impossible choice when the TARDIS team is sent back to the time of the Daleks' creation. You could cut the tension with a knife.
Dan Butler is the Doctor Who Editor at WhatCulture.com. When he isn't writing his own articles or editing other people's, he can be found trawling the internet for gifs of Steven Moffat laughing. Contact him via dan.butler@whatculture.co.uk.