미국 영화, 극장, TV 배우. 린니는 세 번의 에미 어워드와 골든 글로브, 스크린 액터 길드 어워드를 수상하였다. 아카데미 어워드 세 번 노미네이트 되었으며 BAFTA에 노미네이트 되었다. 쇼타임 오리지널 시리즈 <The Big C>에 출연하였다.

뉴욕시 출생. 노스필드 마운트 허몬 스쿨을 졸업하였고, 노스웨스턴 대학과 브라운 대학을 졸업하였다. 줄리어드 스쿨연기학교 드라마 졸업을 하였다.

1990년 연극 <Six Degress of Separation>으로 데뷔하였다.

Film <The Details, 2010> Actress(Lila)
<The Big C, 2010> Actress(Cathy), Executive Producer
<Morning, 2010/II> Actress
<Sympathy for Delicious, 2010> Actress(Nina Hogue)
<The City of Your Final Destination, 2009> Actress(Caroline)
<The Other Man, 2008> Actress(Lisa)
<John Adams, 2008> Actress(Abigail Adams)
<The Nanny Diaries, 2007> Actress(Mrs. X)
<Breach, 2007> Actress(Kate Burroughs)
<The Savages, 2007> Actress(Wendy Savage)
<Man of the Year, 2006> Actress(Eleanor Green)
<The Hottest State, 2006> Actress(Jesse)
<Jindabyne, 2006> Actress(Claire)
<The American Experience, 2005-2006> Actress(Narrator)
<American Dad!, 2006> Actress
<Driving Lessons, 2006> Actress(Laura Marshall)
<The Last Guy on Earth, 2006> Actress
<The Exorcism of Emily Rose, 2005> Actress(Erin Bruner)
<The Squid and the Whale, 2005> Actress(Joan Berkman)
<Kinsey, 2004> Actress(Clara McMillen)
<P.S., 2004> Actress(Louise Harrington)
<Frasier, 2003-2004> Actress(Charlotte)
<Love Actually, 2003> Actress(Sarah)
<Mystic River, 2003> Actress(Annabeth Markum)
<The Life of David Gale, 2003> Actress(Constance Harraway)
<King of the Hill, 2002> Actress(Marlene)
<The Mothman Prophecies, 2002> Actress(Connie Mills)
<The Laramie Project, 2002> Actress(Sherry Johnson)
<American Masters, 2001> Actress(Zelda Fitzgerald)
<Wild Iris, 2001> Actress(Iris Bravard)
<Further Tales of the City Actress(Mary Ann Singleton)>
<Maze, 2000> Actress(Callie)
<Running Mates, 2000> Actress(Lauren Hartman)
<The House of Mirth, 2000> Actress(Bertha Dorset)
<You Can Count on Me, 2000> Actress(Samantha 'Sammy' Prescott)
<Love Letters, 1999> Actress(Melissa Gardner Cobb)
<Lush, 1999> Actress(Rachel Van Dyke)
<More Tales of the City, 1998> Actress(Mary Ann Singleton)
<The Truman Show, 1998> Actress(Meryl Burbank, Hannah Gill)
<Absolute Power, 1997> Actress(Kate Whitney)
<Primal Fear, 1996> Actress(Janet Venable)
<Congo, 1995> Actress(Dr. Karen Ross)
<Law & Order, 1994> Actress(Martha Bowen)
<A Simple Twist of Fate, 1994> Actress(Nancy Lambert Newland)
<Searching for Bobby Fischer, 1993> Actress(School Teacher)
<Tales of the City, 1993> Actress(Mary Ann Singleton)
<Dave, 1993> Actress(Randi)
<Blind Spot, 1993> Actress(Phoebe)
<Class of '61, 1993> Actress(Lily Magraw)
<Lorenzo's Oil, 1992> Actress(Young Teacher)