In a bit of timeliness, I share Why Goalies Hate the New World Cup Soccer Ball [via Clicked]. I have to admit that the physics behind how a ball spins is one of those things that has just never made intuitive sense to me, and it surprises me that people are able to actually think out the correct degree and speed of spin for a particular situation on the fly, when I struggle to do so with a pencil and paper. At least in hockey there is only one axis of rotation to worry about!