Third floor theme park view CL at the Polynesian - opened the curtains and straight on view of the castle framed by palm trees with the beach in the foreground. This was pre-bungalows - it's still a great view but was much better back then.
GF RPC deluxe King theme park view - not as central to the castle or as sweeping a view, but still a great view and an amazing room!
A close third is actually the standard Bay Lake view from the Contemporary. The best standard view room you can ever get IMO, and we had the amazing theme park view from the CL lounge so it was the best of both worlds!