I found his facebook page http://www.facebook.com/julian.gollop

Thanks, Sebastian. I've tried to get them before but had no luck.

If you have their email or Twitter info, send it on.

I second that, there are a few games that where done so right, so perfect, they transend the games around them. Xcom is one of those. one thing i find some of those great idea guys if they are still in the business are really busy, which brings up another question..

matt how do you get guests? just throw out emails and such and wait for a bite? With the web the way it is and so many "shows" and such i can imagine most of these guys get alot of calls to do this type of stuff.

One of the key designers, I think is Julian Gollop from Mythos Games.

Edit:
I found out he has nothing to do with the sequel Terror from the Deep. But he, and his brother Nick are the designers of the first one, who takes the credit of such a wonderfull concept.