How can I make a "grip surface"?

Hi!

Does anybody know how could I make a surface like this (picture)? Is there eny easy way or do I just need to do it “manually”?


Use a texture as a bump or normal map to fake the dimpled appearance
http://www.blender.org/manual/render/blender_render/textures/influence/material/bump_and_normal.html?highlight=normal%20map

subdivide face a lot then do like a random select on faces and extrude a little!

happy bl

Thanks for the quick answers!