Castile and his fellow Going Places cast member Staci Keanan were soon moved by Miller/Boyett into their forthcoming sitcom Step By Step, that premiered on ABC in the fall of 1991.
At age five, she began modeling and appeared in print, radio, and television advertisements, including the voice of My Little Pony and television commercials for Burger King and Hershey's Kisses.
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Keanan had roles in the short Stolen Poem (2004) and the films Hidden Secrets (2006), and Death and Cremation (2010) with Brad Dourif, Jeremy Sumpter, and Daniel Baldwin.
My Two Dads is an American sitcom that starred Staci Keanan, Paul Reiser and Greg Evigan.