TV's Frink said:
I've long thought about using the Life of Brian UFO bit but not exactly sure where.
Maybe in RESB when Luke falls of the Bespin gantry only to be scooped up just like Brian. Then cut in shots of Luke's face from the Shuttle Tyderian sequence into the alien cockpit shots. Then he gets dropped back into the Bespin tube at the end as if nothing happened.
Looking at it, if you coloured timed the shot of the ship hurtling towards Jurusalem to a redish orange it could pass for Bespin at a glance.
OR
Cut together the extra deleted footage of the Stormtroopers searching Mos Eisley (Where people are fleeing before them) with fooage of Brian being chased through the streets of Jurusalem and have the Alien abduction happen there.
Luckily enough the sound of the Roman's armour rattling as they chase Brian sounds just like stormtroopers. So no redub required ;-)
I'd vote for the later idea and have the entire 2 minute sequence uncut in the middle of ARH! (Maybe add in some John Williams) It would be awesome :-D
OOH OOH! Additional! - You can dub the shot of Threepio peaking out of the door after the Stormtroopers pass with the camp "Oooh you lucky bastard" line from LOB. It even sounds like Anthony Daniels ;-)