Will & Grace
- Prison Blues
- Someone Old, Someplace New (teleplay, with Jhoni Marchinko)
- Cheatin' Trouble Blues
- A.I.: Artificial Insemination (teleplay, with Adam Barr and Jeff Greenstein)
- Bacon and Eggs
- Fagmalion Part Three: Bye Bye Beardy
- 23 (with Adam Barr, Jeff Greenstein, Gary Janetti and Sally Bradford)
- Prior to working on the show, Herschlag used to perform on a comedy group with Molly Shannon, who plays the recurring character Val.
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