Linda Edna Cardellini (born June 25, 1975) is an American actress and voice actor. 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, and Laura Barton in . She is also known for voicing roles in animated projects such as CJ in
Regular Show, Wendy Corduroy in
Gravity Falls, and Megan in
Sanjay and Craig.