I mentioned it earlier in the thread that Sony has it, but this is definitely rare on DVD and BD remotes. For streaming media, Roku has Instant Replay as well. I think (hope, really) this is something more devices will support, as folks are used to this ability from DVRs.
When Drew started this thread, I was a bit confused about that too. Seems like he's looking for a button much like the 8 second back button on the D* remotes. Haven't seen any BD players that do that. My "smart" Panny plasma has an interesting NetFlix application on it that does allow for incremental "backs", instead of just putting the film in reverse and running at whatever speed you set it at, it jumps backward one time, mimicking the back button on the D* remotes. Nice, but the PQ isn't the equal of any of my Sammy BD players.
I have the Sony BDPS550 BD player and it includes the traditional Chapter Prev and Chapter Next buttons, but also includes REPLAY and ADVANCE buttons, which jumps back about 10 seconds and forward about 30 seconds during playback, working just like counterparts on DVRs. I never use ADVANCE, but I use REPLAY often.
The keys are in the center of the remote just above the PLAY button.