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Duffy has written and directed several shows with his theater company, Hoi Polloi, including Shadows, All Hands and The less we talk. In 2011, he founded JACK, a performing arts space in Clinton Hill, Brooklyn. He performs there regularly with his avant-garde theatre improv band, The Georges. In 2011, Duffy won an Obie Award  for his work on Three Pianos.
- "Alec Duffy - Lewis Center for the Arts". Princeton.edu. Archived from the original on 2014-07-15. Retrieved 2014-08-25.
- Eliza Bent (2012-07-04). "Do You Know Jack?". Village Voice. Retrieved 2014-08-25.
- Gans, Andrew. "Circle Mirror Transformation, Aliens, Metcalf and More Win OBIE Awards". Playbill.com. Playbill, Inc. Retrieved 8 September 2014.