Joshua Malina, our resident David Rosen and king of lawyer-speak is here to join Katie and Guillermo as they dive into life on set, prepping (or not prepping) before filming, and pranks on set. Josh messed with everyone on set except for Shonda Rhimes and Guillermo, and he explains exactly why. Then, Josh explains his casting process, and how he became a series regular. Plus, Katie and G break down some amazing quotes from the episode and realize that Katie is a terrible driver.