Physics.CapsuleCastAll http://docs.unity3d.com/Documentation/ScriptReference/Physics.CapsuleCastAll.html and Physics.CapsuleCast http://docs.unity3d.com/Documentation/ScriptReference/Physics.CapsuleCast.html take two points as parameters, which are defined as "the start of the capsule" and "the end of the capsule". Then later they are defined as the center of the two spheres that form the two ends of the capsule. Those two definitions are contradicting each other and should be clarified.

also Physics.CheckCapsule http://docs.unity3d.com/Documentation/ScriptReference/Physics.CheckCapsule.html page is incomplete. There isn't even the method signature with details about parameters, etc.