Official apps are a great sign of confidence in a platform, and the latest vote is from Malaysia Airlines, who has released MHmobile into Marketplace.
The MHmobile app will securely store your profile data on your Windows Phone to make booking and check-in fast and efficient. You can also store your travel plans and boarding passes on the Windows Phone so you can access them even when you are offline.
Like most official apps MHMobile is free and can be found in Marketplace here.
Thanks Gopalan for the tip.