Jeff McIntosh of JMDesign posted AE Fold Effect Tutorial on Vimeo.

Among Jeff's contributions in several years of blogging was the unoffical resurrection of Trapcode People, before the creation of Red Giant People and Trapcode Sharelog, and introducing the tutorials on the making the cool Lexus Hybrid Drive commercial.

Those not fully comfortable in AE 3D might look at the two recent introductory tutorials on manipulating planes in AE 3D by Charles Heureaux (despite the intros). Also, check out Create a Split-Flap Type Display by Mattias Peresini (Mattrunks) here on AEtuts+ (posted below too).

Here's Jeff and Mattias:

Create a Split-Flap Type Display Tutorial