Virtuix Omni is a virtual reality interface, an omnidirectional treadmill video game peripheral to maneuver within virtual reality games. The Virtual Omni SDK gives developers the necessary information to fully leverage the interface.
Battlefield Bad Company is a first person shooter for Playstation 3 and Xbox 360. It keeps an amazing amount of statistics about its players, including a score, levels, a kill count, and many other things. The bfbcs.com site has a good listing of these, in a moderately accessible format. It also offers the Battlefield Bad Company Stats API, so programmers can add this functionality to their applications.