How do I pronounce "kilometers" ?
Easy - "K's" (or "Kays")
If really pushed, I'll go along with Mr Happy's "killermeters".

Sian from West Wales, how do I pronounce:

inventory ? "Catalogue" (or "Catalog" in US-speak or computer-speak)
clematis? "Triffid" (Well, it is that climbing thing that tries to entrap me every time I walk past it).
junta? Usually, "Djunta" i.e. with a "j" as in "jug". "Hunta", only if I'm showing off

Oh, and in my opinion, "Brin mar" has devolved, not evolved from "Brynmawr". (I cannot hear about a devolution debate without giggling, ever since I was tasked at work with devolving some computer control system from the server to the clients. It didn't look good on my timesheets that I spent four weeks devolving. I didn't say, into what.