Signatures on a mac

[Veridium]

Hey guys, i was just looking at the forum where u can post and request for signatures and i saw damn awesome signatures!
So i was trying to find something about making signatures on a Imac with which programs and such, but i couldn't find anything so maybe you guys know a program which i can make signatures with on my Imac,

Thanks in advance!

[Fuzzykins]

Photoshop? Paint.Net? Gimp? PaintShopPro? Paint [Insert Mac Equivalent Here].