I have to agree with your choices 100%. I would like to add two of my old favorite short stories. The first is "For A Breath I Tarry" by Roger Zelazny. That one got a bit of press because of its influence on the film Wall-E. The other is "5,271,009" by Alfred Bester. I used to have copies I would loan to people who were curious about science fiction.

I have a theory. I was in the Navy stationed aboard a destroyer. The chairs on the mess deck and many others throughout the ship were mounted on a between your legs I-beam attached to the stanchion supporting the table or desk. This kept the chairs from bouncing around in high seas and the deck clear for swabbing. of course, the only way to sit down was to use the method you see Riker using. It was a hard habit to break. Perhaps Riker was a tin can sailor before entering Star Fleet Academy.