Rigidbody.SweepTestAll  

function SweepTestAll (direction : Vector3, distance : float = Mathf.Infinity) : RaycastHit[]

Description

Like Rigidbody.SweepTest, but returns all hits.

Note that this function may return multiple hits against the same collider, if more then one of the rigidbody's attached collider would hit it in the sweep.