Personally, I think DC is a waste of space.
He comes out EVERY year saying, "I know I was crap last year, but this year will be my year", and never delivers. The only thing Coulthard is useful for is the experience, and Williams have enough of that already. Coulthard would be ideal for a team like Red Bull so he can pass on his knowledge of the tracks/setups etc before he retires in the not too distant future.
It really puzzles me as to who Williams are going to recruit as "driver 2" as there isn't much more talent out there. Heidfeld was thrown around before, but I'm guessing he's staying at Jordan since Briscoe didn't get the drive... Pizzonia is unprofessional as was said before, and Alex Davidson seems to get over looked every year.
Anyway, my 2c (at work and bored), but I look forward to next year and yes, I'm going to Melbourne too! Accomodation is booked, working on flights and tickets.