Yes, I've tried it both ways. Very strange. Soon as I put the Open DNS numbers in it stops working for Google. Soon as I take them out, everything is fine. That's the only site that doesn't work for me and wouldn't be a big deal, but I use and like Google a lot.
OpenDNS runs a google proxy 'as a service for you' This probably explains why google breaks when you use OpenDNS.
;; QUESTION SECTION: ;www.google.com. IN A
;; ANSWER SECTION: www.google.com. 8 IN CNAME google.navigation.opendns.com. google.navigation.opendns.com. 8 IN A 208.69.32.231 google.navigation.opendns.com. 8 IN A 208.69.32.230