Lucy Lawless will guest star on "Parks & Recreation."

"I am so thrilled to work with the #ParksandRecreation crew," Lawless tweeted. "I am always amazed by the Acting and writing. It's kooky, ironic and elegant."

According to NBC, the former "Xena: Warrior Princess" star will play a single mom in Pawnee on the NBC comedy and is currently scheduled to appear in two episodes of Season 5. In her story arc, Ron (Nick Offerman) and Andy (Chris Pratt) are dispatched to help her and sparks fly between Lawless' character and Ron. USA Today reports Lawless' character, Diane, will make her first appearance in the Thurs., Oct. 4 episode.

In February, Lawless told The Huffington Post she'd love to guest star on "Parks & Recreation." In fact, she almost played one of Ron Swanson's (Nick Offerman) ex-wives, Tammy.

"I couldn't because I was doing 'Spartacus.' I would have loved to have done that, but I had a very good excuse not to," she said with a laugh.

"Parks and Recreation" Season 5 premieres on Thursday, September 20 at 9:30 p.m. ET on NBC.

In other casting news ...

Enrique Murciano and Wendy Moniz have booked extended stays on "666 Park Avenue."
Murciano will play Dr. Todd Scott, a surgeon living at The Drake. Moniz will play Ingrid, the therapist to Nona (Samantha Jade Logan). [TV Guide]

"Angels & Demons" veteran Ayelet Zur will guest star on "Touch." Zur will play Rosemary Mathis, an architect with special talents, like Jake. [TVLine]

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