I used Rightmove.co.uk to find my current appartment in Reading and it does a brilliant job of bringing together properties from various estate and letting agents from across the UK. I was pleased to find out (via Mike Taulty's blog) that they have started incorporating Virtual Earth into their website to help users understand the location of the property they are interested in.
I'd really like to see them incorporate the bird's eye view into the map, and also do away with the "Interactive Map vs Basic Map" link which is just confusing. Virtual Earth can have both basic maps and "interactive maps" so why not just have VE?
RightMove, are you listening?