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

1. Enthusiastic audience response
2. Classic half-dollar design
3. Arizona cactus whose spines come off very easily
4. Jewish period of mourning
5. Exhausted
6. Very angry
7. Competition at a lake, perhaps
8. Tuscany architectural wonder

Answers:

1. Standing ovation
2. Walking Liberty
3. Jumping cholla 
4. Sitting shiva
5. Running on empty
6. Hopping mad
7. Skipping stones
8. Leaning Tower