Hey Worzal - good luck with the move.
Here's a few things to look forward to from a fellow Brit in CA:
1. Your first visit to DMV
2. Your first 'storm' (or 'light rain' as you'll know it).
3. The first time a large truck goes past and shakes your home - then realising there wasn't a truck...
4. California drivers
5. California road surfaces
6. Trying to work out 15-20% of every bloody restaurant bill.
7. Trying to say 'Cheeseburger and Fries' with just enough of a Spanish accent to be understood.
8. Realizing the letter 's' has been replaced by 'z' in the alphabet
9. Discovering 'foot' ball is something you play with your hands.
10. Electricity bills that are higher in the summer than the winter.
Oh - and this is my favo(u)rite -
11. 360 days of sunshine a year!!!!
The crazy Yanks are kinda OK too

PM if you want any hints or tips on making the big move. What visa are you coming over on by the way?
Cheers,
Wooley