I once built a Flex application that did a cool mapping of an object in transit. (Due to NDA reasons, I can’t say much more than that.) So of course, I use the Yahoo! Maps API for ActionScript because… well it was the only API available for Flex development and I only had a couple days to put it together.
The client loved the application with one exception. They wanted it to use Google Maps. Ugh! I managed to getting working but it was not fun. I also sent a request to Google to create an API.
Google has listened, because yesterday they released a Flex API. Where was it a year ago when I needed it. Google Code ActionScript API