Following the end of "Will & Grace", McCormack starred on the New York stage opposite Fran Drescher, Judy Reyes, Brooke Smith, and Maura Tierney, in Neil LaBute's off-Broadway play "Some Girl(s)" at the Lucille Lortel Theatre. He plays a writer who is ready to settle down and marry, but decides to visit four ex-girlfriends first. For his performance, McCormack received critical reviews. "New York Times" contributor Ben Brantley, in review of the production, wrote: "Playing a thoughtless, woman-despising heterosexual, Mr. McCormack isn't much different from when he was playing a thoughtful, woman-worshiping homosexual. As in "Will & Grace", he italicizes every other line for maximum comic spin and punctuates his dialogue by earnestly furrowing his features". Brantley went on to say that McCormack's interpretation of the character is "certainly a more slickly sustained performance" than the one delivered by David Schwimmer in 2005. Melissa Rose Bernardo of "Entertainment Weekly" commented that McCormack and Maura Tierney "have incredible chemistry".