Her height is 5' 7" (1.70 m).
Gallagher starred on Broadway in A Few Good Men, originating the role that Demi Moore plays in the movie.
Megan appears on Seventh Heaven as Rose's mom. Megan and Catherine Hicks are sisters-in-law in real life.
Megan has 2 children with husband actor Jeff Yagher.
Megan has a basset hound named Henry and two cats.
Megan has a bachelor's degree from Julliard. Her mentor was actor John Houseman.
She is the youngest of six kids.
Her sister-in-law is Catherine Hicks star of Seventh Heaven (Annie Camden).
Real-life husband actor Jeff Yagher played an actor playing Frank Black (Megan's TV husband in Millennium) in Millennium episode "Thirteen Years Later."