Does anyone know if drives for reading both Blu-Ray and HD-DVD exist? I am not interested in writing to any of that media, just reading (so don't tell me about LG's GGW-H10N ).

As far as I know, the LG GGW-H10N is it in terms of having HD-DVD and Blu-ray reading in one drive. I don't think any other companies have announced any plans yet. I checked on Engadget and the LG unit is all they listed. It will retail for a ridiculous price though (as with most blu-ray/HD-DVD PC drives).

Well, the LG we both mentioned is expensive because it can also write to Blu-Ray media.

Sorry, Sebastian.
The drive from LG is the only drive that supports both HD-DVD and Blu-ray at the moment.