How about a series of levels that you have a specific amount of time to complete.
One is a Doomtown level where you have to find parts to the fridge before the bomb hits.
Another is a begining to the truck chase where you have to free the horse before the Nazi trucks pass.
The other one I have is a catacombs level where you have to make an air pocket before the flames reach you. Anyone affiliated with LucasArts please consider.