Opera v9 has some great presentation features - who needs powerpoint??!!
- Fullscreen mode 'option+ F10'
- keycommand switching between tabs 'Alt+Tab'
- zoom in and out "shift+Plus' = zoom in, 'minus' = zoom out
- and many more
- Almost forgot - you can save open tabs as 'sessions' - a great way to preset multiple web pages for a presentation
Opera also features a small screen device preview - hold down 'shift+option+plus'.