A Pen created at CodePen.io. You can find this one at https://codepen.io/anon/pen/rJVjyP.

 Created this as an answer for [This code golf question](http://codegolf.stackexchange.com/questions/30322/make-it-look-like-im-working/30335#30335) was definitely going for the late 80's early 90's hacker screens. Even made a super serious domain for it http://guihacker.com and yeah this totally could be done in 100% css but I love my canvas.

Definitely looks better fullscreen