Funny story about this, actually..

I was watching the Descent ending cutscene today and noticed that the character "Dravis" sounded similar to the scientists in Half-Life. So for laughs I decided to scour the internets for the voice actors in a 1994 video game (i.e. not an easy task). So the first thing that came up in my Google search was the IMDB page for Descent 3. Lo and behold, when I looked at who the voice actor for the Dravis character was it said David Warner. For a minute I was like "That sounds familiar", then as I scrolled down the filmography page for him, Tron popped into my head and I was like "No way.."

Listen to how much he sounds like Sark (He's the british guy):

http://www.youtube.com/watch?v=BhWVMR6Ll1E
True story.