I do lot of talks these days with some amount of shell live demos. Although it is easy to configure xterm for beamer (black on white, big font, fullscreen), I created an alias for that:
xterm -cm -fa Monospace -fs 32 -bg white -fg black -cr red -bc \ -bcf 200 -bcn 200 -xrm "allowColorOps false" -fullscreen \ -e "PS1='$ ' LC_ALL=C /bin/bash --norc --noprofile"
And this is how it looks like:
I cheated, the font you see is Terminus, not Monospace. But it’s not installed by default, I highly recommend it. Check it out.
If you are reading those lines, chances are this might be useful for you. Take care!