Various calibration disks have some motion testing, but you could also use hockey, tennis, or football as a general test. Generally the most problematic motion for projectors is panning, but in reality the most problematic is compressed signals like Netflix and streaming.
As far as testing motion from a Bluray, the DVE calibration disk and the Spears and Munsil have several tests (although I don't find their tests to really apply much in real world scenarios anymore, a little). Spears and Munsil has the most extensive motion testing overall most likely. The AVS hd709 FREE test disk might have a few (I don't remember but it is a free download, burn to regular DVD, works in bluray player) -
http://www.avsforum.com/avs-vb/showthread.php?t=948496.
