Of course Windows Phone 7 does not support Adobe Flash, but that does not mean we do not want to see the videos on the internet that is still only in FLV format.
Metro Browser is a Windows Phone 7 browser shell by snickler and Marvin_S from XDA-Developers but with a difference. The app works as an intermediate layer between the site and the IE control it hosts, and figuring out when you have a flash video to be played. As soon as it detects one, it plays it using a video player.
The approach does not work with every video on the internet, but does work with MegaVideo, Videoweed, VideoBB, Videozer, Movshare, Novamov, Sockshare, Putlocker and of course Youtube.
Of course it is also a full-fledged browser with a full-screen mode where the address bar can be swiped down from the top, like Microsoft should have done.
Metro Browser is free with ads, and $1.99 for ad-free browsing. The app can be downloaded from Zune Marketplace.