Like many of the songs on this list, Sleigh Bell's fantastically catchy "Rill Rill" from their album Treats, is a song that I've posted on the blog before. And since then, I discovered that the guitar riff is sampled from Funkadelic's "Can You Get to That" off of Maggot Brain. Overall, it's good enough to be called number 8.
Check out the rest of my best of posts, including my favourite albums of 2010-2011 and the rest of my favourite songs of 2010-2011.