SilverWook said:
The two troopers guarding the Tractor Beam thingy could also be a bickering couple. Maybe the two unlucky fellows who board the Falcon? ;)
Yes, they should be the same two troopers all the way through (Also they could be bickering about life as they knock on doors in Tatooine, visit the Cantina, talk to that spy and question Ben about his Droids etc etc). One of them could tragically die in the arms of the other, when Han runs round that corner and blasts a random trooper.
Makes you realise that the other films didn't have these kind of nice random banter from extras scenes (Unless I'm forgetting).