Kat Dennings never attended public high school, yet she made a career out of playing ordinary teens – albeit slightly awkward or rebellious – in movies and TV. Her breakout role was in “The 40 Year Old Virgin” (2005) as a teen having a hard time getting along with her mom’s new boyfriend. Described as a cross between Molly Ringwald, Winona Ryder, and Julia Roberts by screenwriter Lorene Scafaria, Dennings finally graduated to leading lady status in 2008 with “Nick and Norah’s Infinite Playlist” – a romantic comedy that also starred Michael Cera, another young actor who embodied a similar