Actress Lindsay McGrail is Lynn Angell

The apparently spurned girlfriend of actor John Ratzenberger (Cliff Clavin of 'Cheers'), actress Lindsay McGrail, represented alleged 9/11 victim Lynn Angell - playing opposite Ratzenberger himself in the role of David Angell who was credited as a supervising writer/producer of 'Cheers'.

Lynn Angell in middle circa 2001 compared to Lindsay McGrail circa 2009

Lynn Angell 9/11 tribute: http://www.legacy.com/Sept11/Story.aspx?PersonID=91768