However, I think we can all agree that a verse like John 8:32 ("You will know the truth, and the truth will set you free") is more important than one of those Old Testament passages about somebody begetting somebody else.

I've made a list of about 300 Bible verses that are the "most memorizable." I have, in fact, memorized most of them. They're all in NIV. They are not listed in any particular order.