Also here in a thread on UML vs Nothing and a post from Melissa Firth‘s shiny fresh new blog that mentions UML being used to outline the narrative of a novel and it seems that 37 Signals prefer Textas.
Personally I prefer a 4 colour Bic Pen. I have two of them and at least two notebooks in my bag at all times.
I don’t need a computer to program. I do a lot of it visually (in my head) and model algorithms with geometry/diagrams.
I provide the following images for you to judge for yourselves. (Click to view large version)