Acting Sagal and her twin sister,
Jean Sagal served for a time as the "
Doublemint Twins" in the
ad campaign by
Doublemint gum. The pair also appeared together as cheerleaders in the 1982 movie,
Grease 2. In the 1980s, Liz and Jean starred in the television series
Double Trouble that ran from 1984 to 1985. Sagal has since appeared on such shows as
Knots Landing and
Picket Fences. She played a part in the film
Howard the Duck, as a member of the fictional band "Cherry Bomb", in conjunction with which she contributed vocals to the songs "Hunger City", "Don't Turn Away (Reprise)", "It Don't Come Cheap" and "Howard the Duck".
Writing Sagal has worked as a writer on such shows as
Mad About You,
Monk,
Charmed and the reboot of
Lost in Space. She also wrote for the show
Sons of Anarchy on which her sister, Katey, co-starred and her brother-in-law served as showrunner. ==Film credits==