Attack of another science rap video: 3.5 'til infinity

We've already had GENEtics rap, Large Hadron Collider rap, Astrobiology rap, and the non-rap Hotel Mauna Kea. You can now add 3.5 'til infinity to this esteemed list. I think its quite entertaining, has decent amount of rap-science in it, and is nicely done (tip Pharyngula):