many may know the famous Brett Butler scene from the Letterman-Show,
but maybe not that well known, there is also a rather similar male scene with Michael Keaton
getting wet in this pool:

https://www.youtube.com/watch?v=bErJAQlj00Q

You find lots of great links, thank you for sharing!

anybody know * WHY * david letterman thought it would be a good idea to install a VERY shallow pool on his show?