LaTeX + Beamer (for typesetting the presentation in a visually pleasant, clean, simple and consistent way) + KeyJNote (for presenting it stylishly to the audience) = a recipe for success. In particular, KeyJNote, which I found only yesterday, seems to be a fine and tremendously useful piece of software, despite being very young. The only annoyance I have found in it is that it doesn’t respond to Alt-Tab when in fullscreen mode. On the typographical side, I used the progressbar Beamer theme and the Torunian Antiqua font, both to great effect.