Jennifer Lien had one of the sexiest voices around. She played Agent L on Men in Black: The Series
in its first three seasons, and sometimes got play it quite sultry in the first season (before they toned it down more for the kids), and it was amazing to listen to.
And I liked that tendency to pronounce "S" slightly more like "SH." (What would you call that? An anti-lisp?) It reminded me of some classic actress from the '40s, though I forget who.
And she was amazing as Kes. She brought such maturity, wisdom, and gentle strength to a character who was supposed to be so young -- even though she herself was barely an adult at the time.