The Big Bang Theory's expansion series, which will be a true spinoff to the flagship, will feature Chuck Lorre's original Leonard and Sheldon.

Before he joined the cast of Young Sheldon, Lance Barber played a completely different character on The Big Bang Theory.

While discussing potential plotlines for the new show — and how they may tie into other characters and events in Big Bang Theory canon — Lorre said there is a world of opportu