Em caught this reference to Joni and reported to the JMDL:

In the last episode of the season, main character young LA cop dude describes new girlfriend, [Daisy Miller], as a cross between Joni Mitchell and kd lang. Later we see her at a gig doing Carol King's "So Far Away". Just thought I'd mention it.

Derailed
Season 1
Episode #7
Original Air Date: Thursday, May 21, 2009

Forward to 00:22:40
Watch Video Here

OFFICER BEN: kd Lang meets Joni Mitchell

Thank you, Em!

(Contributed by Em)