What are some tactile iPad apps to show to a graphic designer?
Your question didn't specify free apps so here are a few paid apps:


Manage - currently $2.99 in AUD. Has a faux leather look.
Corkulous - currently $4.99 in AUD. Simulates a corkboard complete with sticky-taped labels and sticky notes.
Ruler 2 - currently $0.99 in AUD. Looks like a wooden ruler.
ABC News - this one is free. It's not tactile, but the lead stories are presented wrapped around a globe.


There is a free app called Stylapps that is a showcase for stylish apps, though not specifically for apps that look like tactile materials.