Ascully.com has a look at Plextor's Plexcombo 20/10/40-12A DVD/CDRW Drive.
If you have never considered a combo drive think of the advantages. You only use one drive bay in your tower. DVD, CDRW, CDR, CDROM all play in the drive. Temperatures in your case will be lower due to one less drive in there. And, if you are a case modder, one more free 5 1/4 bay is always a treat in this day and age of LED readouts, fanbuses etc. As you can see, lots of reasons to go combo.More information at Ascully.com