Adding Subtitles to Blu-ray?

[schweizergarde]

I have pretty limited technical knowledge about blu-ray, both software and hardware.

I currently only have 5 blu-ray discs (about 3 dozen on wishlist XD). I have a 1920x1200 monitor and a blu-ray drive. A couple of my friends have nice LCD/Plasma + surround sound set ups. Others have PS3's.

I established this weird principle. I would like to buy foreign movies on Blu-ray from their home countries (and when there's co-production involved, I go with the language). For example, French import of Persepolis, German version of Das Leben Der Anderen, and coming up, the Swedish version of Låt den rätte komma in (Israeli Vals Im Bashir in the future). Aside from having original cover-art and sometimes being distributed by companies with a hand in production, there's no logical reason for this.

The problem is that it seems like most of these don't have subtitles in English (If this is actually untrue, please let me know). I know only two years of highschool German and one semester of French. I don't think I will ever attempt Swedish.

Is there a solution to this? On the PC side, I'm sure subtitles can be uploaded for playback once more blu-ray players are developed. Is there (and will there be) any feasible way for English subtitles to be displayed with playback on PS3?

I first jokingly thought of using a scrolling LED text display, which is stupid for many reasons. Will it be possible replacing the native language subtitle with an English one on the disc itself (apologies if this was somehow illegal...I intend to legally owning the discs)?