Ditto. Looking through my files, I started doing lectures using Keynote in 2007. It is a robust piece of kit, and it makes it easy to record and export lectures afterward. Compared to Powerpoint, I find that Keynote's UI gets less in your way.
Prior, I used the markup/SVG based Slidy, which was pretty neat for its time, but made sharing and combining presentations with other people much harder.
Prior, I used the markup/SVG based Slidy, which was pretty neat for its time, but made sharing and combining presentations with other people much harder.