I can't think of any real scientific developments that echo something in Star Wars. From Star Trek I suppose we now have mobile phones and tablet computers which look a bit like devices imagined by the shows' creators decades before they really existed. It will be awesome if someone eventually cracks the secrets of teleportation and those machines that assemble food and drink out of atoms. Obviously it would be not so good if we ended up with an intelligent supercomputer trying to destroy humanity ala the Terminator franchise, and some of the technology that's out there, like drones with guns, today is a bit creepy.
No, scientists won't just make everything that's theoretically possible. Not because they shouldn't, but because they'll never have enough funding to do it. Given sufficient resources, there are ethics comittees for that.