Lost, Season Six

[Sayid treks out into the jungle hears, the trees shake and rustle. The Man in Black appears]

The Man in Black:
Hello, Sayid.

[Sayid comes forward and stabs him the in heart]

The Man in Black:
[Startled, he pulls the knife from his chest with a grunt. He is unharmed] Now why'd you go and do that?...You want it back. Take it, I won't bite.

Sayid:
[He takes it] What are you?

The Man in Black:
Well you seem to have some sort of idea about that, Sayid, considering you stabbed me in the chest without even saying hello.