Garth Marenghi's Darkplace Easter Egg - Hidden Interview with Todd Rivers

On the main DVD menu, select "set-up".
Once in the set-up menu, highlight the "colour bars" option, and press play. Fast forward through this (it's about 1 minute long). Once at the end, it will jump to a set of hidden videos.
The first is a video of Thornton Reed introducing "Channel Ladykiss", followed by a video of a Darkplace patient frantically reading Garths Novels, followed by a hidden interview with Todd Rivers talking about method acting.