HD Movie Maker is one of those programas that have decided to change its mind and offer Blu-ray support ifor HD movie edition.
HD Movie Maker allows you to add movies to a compilation list and burn them as an only Blu-ray disc or a HD DVD. It's easy to use and it supports a wide range of formats (WMV, MKV, AVI, DivX, XviD, MPEG, MP4, MOV, QT, RM, RMVB, H.264/AVC, M2TS, M2T, MTS, FLV,...). When you'll have finished your creation, just burn it and play it on any Blu-ray player.
In short, if you like making movies and you want to get started in HD edition, you'll need HD Movie Maker.
15 days trial version.