Spent a bit of time at each of the sites. Really liked the Then and Now :Histroy of New York site with the 360 degrees panning around each location. Really cool. A great way to check out a location before you go there.
"Suburbview" is great for checking out any location you would be thinking of moving to, as you can check out various features like parks or surf beaches, and get an idea of how developed the area is; its housing, infrastructure,etc.
Found a site i liked on the "Mashup Awards" site-has great photos http://mashupawards.com/gimme-shiny/
There is just soo much stuff out there now and i find using Delicious helps me keep track of all the sites i want to re-visit without clogging up my Google toolbar. With mashups I can see lots of potential for anyone wanting to be creative and down the track will have a go at putting something together.