Have you ever wondered where the Blender logo came from? Or even why our beloved program is called Blender? Joeri Kassenaar gives us a history of the Blender logo (along with some interesting history of Blender itself).
As far as Suzanne goes, the almighty Wikipedia answers all! It's an interesting parallel that Blender got its name from a song titled "Blender", and that Suzanne got her name from a monkey in a movie, who's soundtrack (you can hear a clip in this link) had a song titled "Susanne." Okay, so not exactly parallel.