For no reason in particular today, my favourite Madonna covers:
Bitume - La Isla Bonita
Showoff - Borderline
Two great punk covers. Their success may actually have to do with a surprising faithfulness to the source material while still rocking out. Curious trivia: according to wikipedia, La Isla Bonita's songwriters Patrick Leonard and Bruce Gaitsch had originally intended the song for Michael Jackson's Bad album.
Peace Brothers - Frozen
I love this upbeat complete transformation of the late-90's Madonna hit. You might be hard pressed to recognize it if you didn't know what the cover was in advance. It's sort of like Madonna filtered through Cheap Trick's I Want You to Want Me.
Montefiori Cocktail - Hung Up
An instrumental mariachi version, one of those semi-rare covers of a song that itself is based on samples of another song, in this case ABBA's Gimme! Gimme! Gimme!.
McSleazy - I Hate Music [Madonna vs. The Hives]
A pretty good mash-up of Madonna's Music and The Hives' Hate to Say I Told You So.
[EDIT: turns out Madonna's 50th birthday is next week, so lucky timing!]