This is the logo I use for my graphic design business,

It started out as a call out on a scan of a technical illustration I was working on. I was zoomed in on a section for some cleanup work and this little "M4" (originally Orator font) had a certain craggy digitalized appeal to it. I copied and saved it. Over the years I worked on it little by little, cleaning it up, outlining it, redrawing it and adding to it in my "spare" time. When it came time for a name and logo for my company, I pulled this out of the files and put it to use! The "design" word is done in Shannon Extra Bold, a softer gentler sans serif font that contrasts nicely with the craggy "M4" part.