The answers to the clues below will have something in common.

1. Ordinary
2. Black Hills monument
3. Postal routing system
4. Harvard club
5. Amphetamines, to an addict
6. Good looks modifier
7. Where some like to live
8. Line form "Abide With Me"

Answers:

1. Run of the mill
2. Mount Rushmore
3. ZIP Code
4. Hasty Pudding
5. Speed
6. Dashing
7. Fast lane
8. "Swift to its close ebbs out life's little day." 

Credit: NY Times Crossword - Nov. 29, 1987
Bert H. Kruse
NOT SO FAST!  (adapted - #1-4)