Bet You Never Spotted This Buffyverse Easter Egg In Avengers: Age Of Ultron

Joss Whedon reveals in his dependably witty commentary on the Blu-ray release of  Avengers: Age Of Ultron (out to buy in the UK from 14 September)  that he managed to sneak a Buffyverse Easter egg into the Marvel film so clever, so ingenious and so subtle that if you ever meet any one who reckons that they [...]