Photo presentation

I have to give a talk where I will show a whole lot of my photos using my Macbook Air linked to a projector. I don't want an automated slideshow because I need to select the next photo only when I'm ready for it. And I don't want to have the hassle of dragging each photo individually into Keynote or Powerpoint and resize it to fit. I can select the photos in Finder and put them on full screen, but then I don't have the ability to order them in the way I want. Can anyone suggest what is the best software to use?