The above video documents something that you've probably never noticed, and yet when it is pointed out you can't unsee it.
This, my friends, is known amongst those in the know as the "Riker Maneuvuer."
Word on the Internet is that Jonathan Frakes hurt his back moving furniture so it was more comfortable for him to sit like that. I don't know if that's true, but I could watch that video for hours.
Find the rest of the posts in this series here.