The response to "Say my name” in a Breaking Bad episode (10)
I believe the answer is:
heisenberg
(Other definitions for heisenberg that I've seen before include "Nobel-winning physicist" , "to give name in uncertainty" , "Exact location and speed ever unknown, I suggested" , "Nobel prize-winner" , "'Uncertainty principle' mathematical physicist, d. 1976 -- begins here (anag)" .)