Get Collided Objects

Is there any function you can call to return a GameObject of all the current gameObjects interceting/colliding with it?

no there is no such function and you should be searching unity scripting API for these kind of queries BTW there docs are pretty Concise

As @Abhi_360 suggested there is no such function. You have to create your own. Heres a little help.

List<GameObject> objs = new List<GameObject>();

//Makes a List of Objects which entered this GameObject. 
//You can use OnTriggerStay too if required.
void OnTriggerEnter( Collider other)
{
	objs.Add( other.gameObject);
}

//Returns the list created above
List<GameObject> GetObjs()
{
	return objs;
}