Back to the battle over coruscant, there's a line of CloneWar's ObiWan that could be the "Obiwansy" line I think you need to complete the dialogue: "I thought you might say that",

I just don't know how to download it, but perhaps equalizing it a little, and putting the radio FX that would act as a curtain, we could buy it's Ewan McGregor's voice.

You could also add to it (before the line) the little laughter of obiwan in the elevator in AOTC, just to increase the good mood feeling

Or it could be the classical "I've a bad feeling about this".