LG has done its bit in helping bridge the HD format wars by releasing the Super Multi Blue GGCH20L ROM drive which is capable of reading both HD-DVD and Blu-ray disks!
On top of that, it will also read regular CD's and DVD's and burn DVD+R at 16x. Being a new drive, naturally is utilizes the much more future-proofed Serial ATA interface and includes 4MB cache buffer.
Google Products is listing it between roughly $300 - $360 USD with one store offering it up for a tad under $300. It's a fair bit more expensive than the cheaper Blu-ray readers but given that it is also able to read HD-DVD disks, it's really a rather impressive price.
If you're a HD enthusiast and building a new Home Theater PC over the holidays, you wouldn't be blamed for putting the LG GGCH20L ROM drive near the top of the shopping list. You can find a full list of the specifications of the drive at this website.