The scene went WAAAY down-hill once that ironing board Vader was on rises, before that it was ok (Other than when the mask is lowered onto Digital Hayden who's face was hit by a train)
One of the main problems is that the only things that we hear come out of Vader's mask in the whole movie are (Correct me if I'm wrong and he says something else too) "Where is my wife :(" and "NOOOOOOOOOOOOOOOOOOO" which makes first time viewers think that Vader is a total *gasp* normal person caring about his wife! Not some bad-ass villian as he's portrayed as in the originals. This ruins the character for most people...
And then theres when Vader wobbles off his recliner and the way he walks, it looks like Hank Hill's dad.
The scene could of basically gone like this, it'd still get the same response (Laughter and mass suicide)
Vader: Wheres my wife that I just choked to death? *Sad face*
Palpatine: Lord Vader, *Laughs* it seems in your *laughs* rage that you *laughs* killed her *laughs* but who needs *laughs* girls anyways? Here *laughs* at the Empire, it's all men! *laughs*
*The song "It's Raining Men" plays in the background*
Vader: What? No, thats impossible even though I just saw her died in front of me!
*Peg-leg Paul then wobbles off of his fold-up Ping-Pong Table*
Vader: NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!
But thats just my vision, feel free to flame my opinion :D