Not long ago, I was crazy about Android, then Nexus One, then HTC Desire HD, then Nexus S. Read here for what I am talking about.
The newly released (in Malaysia) HTC Desire HD
Guess what I bought? A HTC HD2 (Click here for full spec)! Oh well you can probably guess it from the title anyway. But yes, out of all 3 Android models mentioned above, I bought a HTC HD2 which isnt running Android OS at all. Instead it runs a Windows Mobile 6.5. Actually, the latest Windows Mobile available in the market now is Windows Mobile 7, and from here you can probably guess that HTC HD2 isnt the latest phone model out there (if you havent already know).

HTC HD2
And guess what? I am currently running Android with HD2! Of course its not a surprise for those Android-fans out there but I am saying to those who didnt know.
Simple guide (by direct-linking to XDA) for those who wish to use Android on their HTC HD2:
First, you need to make sure what is your HD2 model, HTC HD2 or T-Mobile USA HD2? You can click the respective for a long guide on how to flash your HD2.
Here is another guide on how to install Android, which is quite detailed.
As of the last day of 2010, I am running Dutty Family ROM V12 (20/12/2010) as my Windows Mobile ROM while using Core Droid HD V0.4 (24/12/2010) as my Android ROM. I am using Android as my daily ROM and I am loving it! The battery life used to be horrible most probably due to the previous WinMo ROM I was using, and it is fabulous (at least acceptable) now that I am running Dutty! In standby (locked mode) the battery drain is minimal, although when in use it could suck the juice out of you real fast, mainly due to the big, very big, 4.3" screen!
Watching videos and movies is a boon with the 4.3" though. I used to play Dungeon Hunter on my sold-iPod-Touch, but now that I am playing it with my Android, I can really feel the difference of size! Android is an open source OS so a lot of applications are available to cover some unsatisfactory issue of your current Android which is quite cool. Entertainment wise, it is no way close to Apple's games database, but that's a trade you will have to choose here between Android or Apple.