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Monica Potter is joining the cast of “Boston Legal,” ABC’s Sunday night evolution of “The Practice.”

Potter (“Patch Adams”) will play Lori Colson, a junior partner at the firm of Crane, Poole & Schmidt. Although she’s a successful attorney, she sometimes doubts her calling and takes occasional pro bono assignments. She also forges a kinship with James Spader’s Alan Shore.

Potter joins Spader, William Shatner, Lake Bell, Rhona Mitra and Mark Valley as cast regulars on the drama.

The “Boston Legal” job could reunite Potter with her “Head Over Heels” co-star Freddie Prinze Jr., who has signed on for at least two episodes this season.

For Potter, the best thing about her new gig is that it guarantees her a place on the small screen in the fall. During the 2003 development season, she appeared in the CBS comedy “The Lunchbox Chronicles,” which failed to get picked up. Early this year, she was cast opposite Chris O’Donnell in the unsuccessful comedy pilot “The Amazing Westermans,” also at CBS.

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Edited by Cara DiPasquale ([email protected]) and Kris Karnopp ([email protected])