When your ship gets blown up by a ship out of his arc:

"They came from....behind!"

When you get absolutely blown off the map:

"Many Bothans...died...." (1000 yard stare helps)

When passers by are watching you get blown off the map:

"Move along. Move along."

If Chewie ever kills something:

"Let the Wookie win."

Randomly:

"Shut off all the garbage compactors on the detention level!" (The shriller the better)

If Luke ever dies

"And now, young Skywalker...you will die." (pretend you're shooting lightning out of your hands)

When you take a meaningless crit:

"I'm hit, but not bad!"

If a ship with R2-D2 ever gets destroyed:

"Woooooaaaaooooowwww!"

Every time I think of putting C3PO in the back seat of the expanded B-Wing, I feel so sorry for that pilot:

"Never, never, NEVER tell me the F*%#ING ODDS!" (I like to imagine him trying to fly with one hand while reaching over the seat to slap 3PO with the other)

i was playing yesterday, it my not be a quote, but we all had the STAR WARS music playing... people coming into the hobby shop to watch us thought it was pretty cool. but when Vader attacks say 'Leave this one to me"

Whenever someone gets pessimistic about the game:

"I find your lack of faith disturbing..."