Portfolio for interview (digital designer): paper or laptop?

I will have several interviews for interaction and digital design in next week.
Just wonder what kind of format of portfolio, paper or digital based, would be suitable to present this kind of works for the interview situation.

Since, generally, I think most of my works are about user interface design, digital installation, animation, and dynamic visualization… so by using flash presentation from my laptop should be easier to give a lively experience for the interviewers.

On the other hand, I don’t know about the environment of each meeting room, so in case that they don’t have projector, or if there are so many interviewers at a time it would be terrible to present my projects from small laptop screen.