"Armistice" by French band Phoenix:
Here's the album version that's been burning up my iPod this week.
Then, there's "Sweetest Kill" by Broken Social Scene. I'd originally told my friend Steven that this was sung by Feist (and it totally sounds like her), but, alas, it sung by BSS's Kevin Drew.
Once again, here is the studio version. Listen, and if you're familiar with Feist's voice, you'll hear what I mean.
Also, here is my all-time favorite BSS song: Lover's Spit. (If you're familiar with Queer As Folk, this is the song played when Brian and Justin get back together and have sex in Brian's office.)