Some more covers from films. Sometimes I'll love a cover not because it's a particularly good version of the song but because it is featured in a memorable scene:
A great scene in Terence Davies' 'Deep Blue Sea'. A cover of Molly Malone.
Another great scene from 'Toni Erdmann':
The wonderful closing scene in 'Before Sunset' (a semi-cover by Julie Delpy of Nina Simone's Just in Time)
Another terrific closing scene, where "The Best of Times" from La Cage Aux Folles is covered:
Another great closing scene featuring Kurt Weill's Speak Low in 'Phoenix'. Spoilered for anyone who hasn't seen this film.
Pixies cover from 'Observe and Report'. NSFW'ed for excess male frontal nudity.
Cover of You Always Hurt the One You Love on ukulele