We have just had a bout of chicken pox here - first DS and then DD about two weeks later. Both were mild cases, they had the rash but no other problems (although reaaally cranky!). DD had a bit of trouble sleeping due to the itchiness.

Chicken Pox isn't on the vaccination schedule here in NZ and I wouldn't pay to get it done because it is not life-threatening and although it is a bit uncomfortable for them I think that a natural immunity is better in this case.