Foglia's off-Broadway credits include A Backer's Audition (1992), Lonely Planet (1994), One Touch of Venus (1996), and If Memory Serves (1999). His regional theatre credits include The Subject Was Roses, Thurgood, and The Secret Letters of Jackie & Marilyn. He wrote the libretto for Jake Heggie's opera The End of the Affair and conceived and directed Dreamland, a revue featuring the songs of Harold Arlen. In 2008, Foglia directed the world premiere of Jake Heggie's opera Last Acts at the Houston Grand Opera.
Foglia directed the production of Thurgood, a one man show about the life and work of U.S. Supreme Court Justice Thurgood Marshall at Booth Theatre. Thurgood, starring Laurence Fishburne, opened officially on April 30, 2008. 
In 2009, Folgia will be directing the production of LET ME DOWN EASY by Anna Deavere Smith; presented by Second Stage Theatre.
In 2011 With David Richards, Foglia co-authored the 2011 suspense novel trilogy The Sudarium Trilogy. (ISBN 978-1463692633)
- "Laurence Fishburne is 'Thurgood' on Broadway Spring 2008". broadwayworld.com. October 24, 2007. Retrieved 2008-03-09.
- "The Sudarium Trilogy".
- Internet Broadway Database listing
- Lortel Archives listing
- The Sudarium Trilogy - Leonard Foglia's Website and Latest Novel