Depends entirely on the age and version of your console, but it happens to everyone, its no big issue :)
Yes
You can open the disc tray and place the DVD in the XBOX 360 and hit Play. It will read the DVD disc and present you with an option to play your movie unless it is a burnt copy and in a ill-regular format which in this case the standard XBOX 360 drive firmware won't be able to read it.
no
Not sure about the original xbox.But the Xbox 360 can
YES!
It usually means that it can not read the disk
You just put the DVD into the Xbox 360 tray close it.And injoy
You can open the disc tray and place the DVD in the XBOX 360 and hit Play. It will read the DVD disc and present you with an option to play your movie unless it is a burnt copy and in a ill-regular format which in this case the standard XBOX 360 drive firmware won't be able to read it.
NO the ps3 does
No, the Xbox 360 elite only plays DVDs like all other models of xbox.
If it works on a DVD player, it works on a xbox 360
yes the xbox itself will play regular dvds
yes but not blu ray ones