AD/BC is a parody rock opera with music by Matt Berry and lyrics by Matt Berry and Richard Ayoade. It premiered on BBC Three on 21 December 2004.

Matthew Charles Berry is an English actor, comedian, musician, and writer. He has appeared in comedy television roles in The IT Crowd, Garth Marenghi's Darkplace, The Mighty Boosh, Snuff Box, What We Do in the Shadows, and Toast of London, the last of which he also co-created. The series earned him the 2015 BAFTA Award for Best Male Performance in a Comedy Programme. As a musician, he has released nine studio albums.