Font

If you are in IT professionally (coding or sysadmin) you will be staring at monospaced fonts for many many hours a day. So it's probably justified to spend 2 minutes picking a very good one. It can make your work (typing ; ) just a little bit more pleasing.

A couple of years ago when everyone still had giant CRT monitors, resolutions of 1600x1200 were pretty common. Nowadays however 19" TFT monitors often cannot scale higher than 1280x1024. So how can we still fit more on one screen? DPI can help!