Remember the FMV sequences in Rebel Assault 2? I don't remember if they made the game somewhat better or were flat out stupid. I was 10 or 11 at the time of watching them and probably not the best to be the judge of that.
I rather enjoyed the FMV of JK but yes, it does take you out of the gaming experience.
"The Force is strong with Katarn...." - Darth Vader, Star Wars: Dark Forces