Here are 10 plays I saw off-off Broadway this past year and enjoyed tremendously:

1. Gob Squad's Kitchen (You've Never Had It So Good

2. In the Pony Palace/Football

3. The Divine Sister

4.  Enfrascada

5. Silence!  The Musical 

6. The Lapsburgh Layover

7. Mangella

8. The Select (The Sun Also Rises

9. Post Office

10. Derby Day
An addendum:  Not exactly a play, but I couldn't stop smiling throughout  Ennio Marchetto, The Living Paper Cartoon.