Some fun features I have seen on euro firmware loaded on openbox s10 research.
Games. The 3 basics like tetris,othello and sodoku.
I sometimes load firmware that the tuner is dead just to play games.
Resume playback on recorded programs.Start watching a recorded program then stop and come back another time to watch,you get a popup asking if you want to resume playback from where you left off.
TS file size,handy for hd recording so you don't end up with 1gig chunks you have to deal with when trying to burn the result to dvd.I have seen choices of 1,2,3,4gig or unlimited .ts file size.
Choice of TS or .MPG for recording,instead of TS or PS
Signal beep function for dish aiming.
REC icon that disappears once recording starts,but you have a tendency to forget you are recording sometimes and try to change channels.Banner at the bottom of the screen that disappears by itself when playback in slow motion or pause.