I love that scene due to Neelix.Yeah, but that wasn't the first time Mulgrew had done that on a Voyager episode, and Ryan did it once as well.
I'm drawing a blank, when did Ryan do it.
"Relativity"
It's a short scene in the mess hall during a table tennis tournament.
Even though everyone is stunned by the temperal annomally, he still marks the ball as being out.

Best acted ep. by Mulgrew:
Sacred Ground
Counterpoint
Basics
Tuvix
11:59 (While not really a "Janeway" ep., Mulgrew does a excellent job playing Shannon O'Donnell)