You read that headline right. As Chuck prepares to take a short break prior to the Winter Olympics starting, the man behind the show, Josh Schwartz, has confirmed a fabulous piece of guest casting.

Announced over his Twitter feed, Schwartz revealed that Lloyd would be turning up in the show. Here's the exact post:

"Here's some scoop: Christopher Lloyd to guest star in ep 16! Back 2 The Future a huge CHUCK influence!!"

This, friends, makes us very, very happy indeed. Make him say "Great Scott" a few times and we'll fall off our sofas with geeky glee...