Mike's "Texture"

Partially this is a poke at my brother who used to send me random pics of TP dispensers with his Crackberry.
Having the proper texture in toilet paper is quite important, however, even more so than the age old question of "roll to the front or back". Not enough texture and it just does not do its intended job. Too much and you may as well be using corn cobs like the settlers did.

Can you tell me which planet toilet paper can be found on besides Earth?