little gesture that he did at the end i cant explain it really.
It was an homage to the emotional Talaxian, a way for the unemotional Vulcan to acknowledge their "friendship".
The rest of the first scene that
kathrynjaneway quoted goes like this...
TUVOK: Vulcans do not dance.
NEELIX: But it's tradition.
TUVOK: There is no tradition, Mister Neelix. This ceremony is entirely your invention.
JANEWAY: This is an official ship function, Commander. Don't make me order you to dance.
Two scenes later while in the
Delta Flyer, Neelix and Tuvok are still going at it.
NEELIX: It wouldn't have hurt you to do a few steps.
TUVOK: I am trying to concentrate on the shields, Mister Neelix.
NEELIX: I think you were just afraid.
TUVOK: That's absurd.
NEELIX: It's understandable. There were a lot of people watching.
TUVOK: Vulcans don't experience fear.
NEELIX: I'm going to make it my personal mission to get you to dance at least once before we reach Earth.
TUVOK: Then I suggest you find a more productive hobby.
Tuvok's final goodbye to Neelix "gave him" that personal victory.