You know her as:
Why we like her:
Becky was introduced in Season 1 mostly to show that Sue (Jane Lynch) could, on certain occasions, have a soul. This season, however, she's become one of the more reliably funny parts of the show (which to its credit never plays her disability for cheap laughs). As Sue's assistant/minion, Potter has shown pretty fantastic comic timing.
Where else you've seen her:
Her only on-screen appearance pre-"Glee" was in a 2007 independent film called "Mr. Blue Sky."
-- Rick Porter, Zap2it