I have an LG Bluray drive in a BYTECC enclosure
that has FW800/USB2.0/SATA interfaces. Obviously,
there is no SATA on the Mac but the FW800 and
USB2.0 work just fine. Also, there are no drivers
needed the chipsets support USB and FW800
Mass Storge Device protocols. I got mine
at Newegg.
http://www.newegg.com/Product/Product.aspx?Item=N82E1681714506
The package can also accomodate 3.5 hard drives
up to 2 terrabyte.
And as for Blurays, you can watch them using
the Macgo software, although their multichannel
audio isn't quite there yet, the movies look great
played back on a 1080p display. There are other
means to get Bluray content playback, but they
can't be discussed here as the methods are
illegal in most civilized countries.