Great Scott! Christopher Lloyd Is Doc Brown Again, for Lego

Back to the Future role reprised for Lego Dimensions ad

For Back to the Future fans, there are few things more delightful than seeing Christopher Lloyd doing his best (and most paranoid) Doc Brown.

Thankfully Lego got the actor to reprise his iconic role in a new spot for Lego Dimensions—where Doc Brown will now live on as a Lego character—and the resulting spot has made Lloyd a trending national topic today on Facebook.

The ad follows up on the success of an earlier installment starring Community's Joel McHale and a cluster of toy characters including Gandalf and Batman.

Coming in September to PS4, PS3, Xbox One, Xbox 360, and Wii U gaming platforms Lego Dimensions lets fans use real-world toys in the virtual game world. Lego Dimensions also fuses various fictional universes together, including DC Comics, The Lord of the Rings, The LEGO Movie, The Wizard of Oz, Back to the Future and more. 

In the new ad, Doc Brown discovers a portal to the Lego world and worries about (what else?) the space-time continuum: