I just saw the trailer for the Arceus movie at Pokemon.com, and the guy pronounced it Ark-e-us
gonk I've always said Ar-sea-us. Then I went and looked up the Japanese trailer to see how they say it (since that's the original and what I revert to in times like this) and they said Ar-seh-us! Which is closer to Ar-sea-us than Ark-e-us!
blaugh So, how have you guys pronounced Arceus? Don't lie now...
And here's a good video of the Japanese trailer if anyone's interested, it has a translation in the description.
http://www.youtube.com/watch?v=3O9ohyZwmDQBtw Arceus event! Look under the Gaming Topic for my post!
rofl