I logged into Google Maps today and saw that they had subtly changed their UI. I really like the new concept of their navigation controls on the top left, as well as the draggable Google dude. Before I wasn't too keen on the whole "Streets View" button. It felt like I had to make the decision up front as to whether or not I wanted to view peoples houses, etc... It was interfering sitting at the top with the other views (Maps vs. Satellite), but didn't really 'fit'.
The new UI allows the user (ie. Me) to find the address I want as I would normally, then when I get to where I want to go, I can then decide where I would like to see 'Street View' simply by dragging the little Google dude onto the map. If there is no image available for that area, it will show up, "Image not available" and that's it. It's simple and elegant.
Eventually, I could see Google integrating Google Earth functionality on their site (using Flash or something) and I can't wait for that day! Until then, I'll just keep checking their site, recommending it to everybody I know, and wait impatiently for more updates. If you haven't checked it out, be sure to do so.