AFAIK there is no way to skip the scenes which uses the game engine (like the one where Irenicus says, "The Child of Bhaal has awoken. It's time for more... experiments). The videos otoh can be skipped by pressing the Esc button.
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"Butt-kicking for goodness!" - Minsc
"Cities always teem with evil and decay. Let's give it a good shake and SEE WHAT FALLS OUT!!" - Minsc
