Can you watch dvds with PlayStation 3 or only Blu-ray?
If you can watch Blu-ray with it, then of course DVD too.
With the Playstation 3 you can watch DVDs as well as Bluerays!
A drive that can play Blu-rays can usually play DVDs and CDs as well.
I would be surprised if it is different with the PS3.
It's not different and I don't think there's anything like that.
All Blu-Ray players can play DVDs