It always pleases me to see pictures of NGC 4216, the edge-on spiral galaxy with a star beside its nucleus. I used to use it as a pointer to the short-period contact binary star CC Comae Berenices back when I used observe eclipsing binaries with my Celestron 8.
And the book it led to is 101 Amazing Sights of the Night Sky: https://www.amazon.com/101-Amazing-Sights-Night-Sky/dp/15919...
Neither is very popular, but it was a lot of fun.