Let the hive mind of Engadget get that for you.
"I commonly need to boot a system from an external disc and take a snapshot of the host system. I also then need to burn a copy of the image to a DVD. While I can do it with two separate external devices, and two power supplies, and two I/O cables, it'd be nice to find a small dual-drive enclosure. It would need to have USB, eSATA, and FireWire. Either slim-line or half-height bay for the optical burner would be fine, and space for either a 2.5- or 3.5-inch hard disc. Any ideas?"
So, my last bit of advice...if you don't already have a really big front-projector/screen display, don't spend $2000+ on a rear-projection/plasma/DLP/LCD display. For a truly glorious encompassing movie watching experience, I say: the bigger the better!