10 Times Doctor Who Appeared In Movies
8. Cars 2
A much more subtle reference now, one found during the finale of Pixar's Cars 2.
Here, British spy cars Holley Shiftwell and Finn McMissile are captured and tied up inside Big Ben. To escape, Holley determines that she must change the direction of the clock (or "turn back time", as she puts it), and while she's struggling to do this, she also states "if I can just reverse the polarity".
"Reverse the polarity", as Who fans will know, is one of the most famous phrases in the show, spoken by many Doctors across the classic and modern eras - though it's most associated with Jon Pertwee's Third incarnation.
Considering the timey-wimey context of this Cars 2 scene, there's no way the line was anything other than a nod to Doctor Who. And with Disney now involved in Doctor Who directly, it's fun to look back on this in retrospect!