Here's this week's Cover and Original. I think that describes my mindset over the past couple of months, so it's not really a favorite of mine.
The covered version by the Postal Service is a fantastic cover, taking the song and really turning it into a 'Postal Service' sounding song that's really different from the original, and even changes it's sound a bit. The original is one that sounds very 80s to me, and I think that this is one of the cases where I think that the cover is superior to the original.
Against All Odds (Phil Collins) - The Postal Service
Against All Odds - Phil Collins