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.
who does linda cardellini play in age of ultron
Laura Barton