Paul Jackson, one of my favorite paper artists, put together this wonderful five minute video on making a corrugated paper surface:
Paul is, of course, the master of this sort of folding, along with many other styles (see his website linked above for many beautiful examples). There’s been a good amount of interest in this style of folding lately, which I can’t talk about without mentioning my friend Ray Schamp, or his great Flickr group, Origami Corrugations.
As someone heavily biased towards origami tessellations, I have a strong affinity towards this style of folding- tessellators see a lot of pleats, and it’s a rare day when I do not succumb to the pleasure of twisting pleats around to make interesting shapes and structures. (who can avoid it? If you haven’t tried, fold some pleats and try it sometime…)
Footnote: check out Paul’s introductory video about himself and his work.