There is certainly plenty of activity in the Media Browser community at the moment. Yesterday there was a client for Samsung TVs and today there is an update to the Roku channel for Media Browser. The update adds Live TV streaming, photos support, trailers and has some other minor changes.
The addin is free from here: www.roku.com/channels/#!details/34503/media-browser
Photos (including slideshows)
Additional toggle options including suggested movies, genres for tv/movies
Remember user specific toggles
Ability to browse your collection by letter
Intros Plugin support
Remember or forget user on each login