<Tr> <Th> Years active </Th> <Td> 1994--present </Td> </Tr> <Tr> <Th> Partner (s) </Th> <Td> Steven Rodriguez (2009--present; engaged since 2013) </Td> </Tr> <P> Linda Edna Cardellini (born June 25, 1975) is an American actress . She is known for her roles as Lindsay Weir on Freaks and Geeks, Samantha Taggart on ER, Velma Dinkley in the live - action Scooby - Doo feature films, Sylvia Rosen, a neighbor of Don Draper's on the AMC drama series Mad Men, Meg Rayburn on the Netflix original series Bloodline, Cassie in Brokeback Mountain, and Laura Barton in Avengers: Age of Ultron . She is also known for voicing roles in animated projects such as CJ in Regular Show, Marcy "Hot Dog Water" Fleach in Scooby - Doo! Mystery Incorporated, Wendy Corduroy in Gravity Falls, and Megan in Sanjay and Craig . </P> <P> Cardellini was born in Redwood City, California, the daughter of Lorraine (née Hernan), a homemaker, and Wayne David Cardellini, a businessman . She is the youngest of four children . Cardellini was raised Catholic . She made her first public appearance at age 10, when she sang in a school play . Subsequently, she acted in several school productions and started attending drama lessons . She graduated from nearby Mountain View's Catholic St. Francis High School in 1993, then moved to Los Angeles to seek roles in television and film . Cardellini was a contestant in a 1994 episode of The Price Is Right, winning a fireplace . </P>

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