How convice people that D it's wonderfull in a hour ?

[Zardoz]

Recently I've been asked if I could give a speech about D in my university. It
will be of one hour of long.
I not respond yet, but I think that I will do it. Actually I have the problem
that I don't know well how explain well too many features and things of D that
I like. I think that only talking about D's arrays and type system I will need
around half-hour.
Any recommendation of how I should focus it ?