Cover songs that improve on the original

Ilyka started a thread about when bad covers happen to good songs, and the topic came up of what cover songs people actually like. We had a really great thread on that last year, and I thought I could post a couple MP3s of some of my favorite songs. These are both versions I think improve dramatically on the original, though I wouldn't go so far as to say that I think the originals are bad songs. I wouldn't gouge my eardrums out listening to the originals of "I Want To Hold Your Hand" or "Ohio", but I'd rather hear these versions in a heartbeat.

Al Green---"I Want To Hold Your Hand"

Devo---"Ohio"