HD-DVD & DVD Combos
 

Are all HD-DVD releases combos with the HD and Regular DVD versions. If not, is there anywhere to get a list of the combo releases?

No. Mostly the new releases have been combos, they usually come with a huge MSRP around $39.99. I typed in HD-DVD Combo to Amazon and sorted by DVD and got this list http://amazon.com/s/ref=sr_nr_i_1/10...i%3Advd&page=1. It seems pretty accurate, the only one I own is The Break Up.

If you're in store, they are usually clearly marked as one or the other. For example, combo releases like Kiss Kiss Bang Bang will have a (plays on HD DVD and DVD players) sticker. Others will have a (plays only on HD DVD players) sticker.

This list should be pretty much complete.