TheBoost said:
I've always liked the scene because "We would be honored, if you would join us." isn't just evil... it's SARCASTIC. It's the only time we see Vader just straight be a dick.
"[Admiral Ozzel] is as clumsy as he is stupid."
"Perhaps you think you're being treated unfairly?"
Probably some others too.
As for the laser bolts, I figure Vader just borrowed a variation on Yoda's "lightning catch" trick from AOTC and ROTS.