Carey Mulligan turned down an offer to be a companion on Doctor Who after "Blink"
“Blink” is arguably the most beloved episode of the modern Doctor Who era, with a slightly unsettling mystery that isn’t too dark, the first appearance of a now-iconic monster, and the origin of “wibbly wobbly, timey wimey” (a phrase that non-Who fans probably wish could be eradicated from existence). It also breaks the show’s format a little bit, focusing on a new character named Sally Sparrow instead of David Tennant’s Doctor. Sally is played by a pre-famous (or at least pre-United States famous) Carey Mulligan, and her portrayal of a mostly normal young woman who suddenly has to solve a time mystery when her friend is transported to the past by a living angel statue won her plenty of fans among the Doctor Who faithful.