Look Who's Talking
In the 1989 box office hit "Look Who's Talking", Caplan played the flirty best friend of Kirstie Alley, the female lead. She returned as Rona in the moderately successful first sequel "Look Who's Talking Too" (1990), with Elias Koteas as her love interest. She (and Koteas) declined to appear in the financially unsuccessful second sequel "Look Who's Talking Now" (1993).