Bingowings said:

At the beginning of ROTJ Vader turns up to give the Moff the bad news that he can't have more men until he gets the second Death Star working.

So it couldn't have blown up anything around the time of ESB because it wouldn't be operational yet.

Obviously. What I meant was, destroying any planets wasn't even mentioned. Obviously they couldn't blow up any planets during episode 5, I meant, if the empire and the sith were truly the bad guys, they would've at least had plans and mention of it during episode 6. Darth Vader never told luke skywalker that "join me and together we can destroy the planets with the death star as father and son"". I won't even discuss episode 6 because that is totally off-topic and not pertaining to this thread, as we've gotten off on a bit of a tangent here already, discussing cloning and stuff like that!!!!!