: Josh Radnor ( How I Met Your Mother ) guest stars as Jon, Meredith’s brief love interest. Episode Data "Grey's Anatomy" Momma Knows Best (TV Episode 2018)

: Amelia Shepherd and Owen Hunt navigate their unconventional family life with teen addict Betty. Amelia enlists Owen's mother, Evelyn, for advice after a dispute with Betty over a suspected drug relapse. Crossover & Guest Stars

: Meredith Grey arrives at work dressed for a blind date arranged by her patient, CeCe. She mistakenly meets a man named John (Josh Radnor) at the restaurant, and the two hit it off until he reveals he does not like dating single mothers, ending the potential romance.