This movie features four members of the Stiller Family: Jerry Stiller, his wife Anne Meara, Ben Stiller, and Ben's sister, Amy Stiller, who does bit parts in most of Ben's movies.
When Charlie is driving to the Road to Nowhere, at first he's wearing a white tank top, then for the rest of the driving scene he's wearing an olive green t-shirt. When he arrives at the entrance and jumps out of the car, he's wearing the white tank top again.
When Charlie enters the road to nowhere and observes the gaps in the rocks above. The camera tilts up and a light appears in shot to the left of the screen.
Beezle: People live, people die...they come down here. I have infinite levels of Hell. What you've seen is nothing, a mere kindergarten. It's so easy for me now. People have lost their willpower, their hope. They think the world is going to come to an end. Wishful thinking. The world will last a long long long long time.