This is one of the best episodes of the series. It really defines who Mac is and what he is capable of. This episode also begins to define the relationship between Dani & Mac and Dani, Mac and Henry, mostly that Dani and Mac will do what they want in spite of Henry.
My favorite scene is at the end when he rushes into to the room to save Dani. He is so calm and he is reassuring her that she is safe and he won't let anything happen to her. Then he demonstrates his ability by shooting into the middle of the zero about Eric's ear and Eric crumbles to the floor. Mac takes Dani into his arms, what a great chemistry between these two. SOOOO potential.