Terminal
I know I'm late, but I eventually did it: I've finally changed my terminal font from the non-antialiased Terminus to an antialiased font. First time, seriously! I'm that much of a dinosaur.
Have a look: that's konsole on KDE 4.12 with the default Monospace (which is actually DejaVu Mono) font and the 'solarized-light' color scheme. The screenshot additionally illustrates the use of autojump and displays all of my vim extensions handled by vimogen.
Talking about vim: here's vim itself displaying a paper I've just submitted. The vim color scheme is 'solarized-light' as well.
Other great fonts for the terminal include Consolas from Microsoft, Monaco from Apple, and the free font Inconsolata.