My favorite is Keri Hilson, Kanye West, and Ne-Yo's Knock You Down. This song is extremely fun, with a great video to boot. I've just read through the lyrics -- they are a bit nonsensical, but the rhyming is fantastic and the beat definitely moved me.
Keep rockin' and keep knockin'
Whether you Louis Vuitton it up or Reebokin
You see the hate that they're servin' on a platter
So what we gon' have, dessert or disaster?
We were never meant to be
Baby we just happen
So please don't mess up the trick
Hey young world I'm the new Slick Rick
The song is from Hilson's debut album, "In a Perfect World," which was released early in 2009. Hilson is from Georgia; prior to going solo she was a songwriter for Britney Spears and Ludacris among others.