In “Too Much,” Megan Stalter and Will Sharpe mine a situationship for love, with cameos from the likes of Andrew Scott, Stephen Fry and Naomi Watts.

Lena Dunham is sitting in bed, draped in a pink tulle gown fit for a princess, reading a book about torture. It’s a prop for our photo shoot, which is taking place in an eccentrically decorated hotel ...