Jillian Bach is an American actress. She is best known for her role as Irene in the ABC sitcom Two Guys and a Girl. She was also series regular on the CBS sitcom Courting Alex. She also guest starred in the television series Felicity, The X-Files, Party of Five, Gilmore Girls, Grey's Anatomy, The King of Queens, Law & Order, NCIS, Bones and Private Practice. As well as appearing recurringly on ER and The Mentalist.She also co-starred in the films The Uninvited and Julie & Julia.