Between iPhoto, iMovie, and iDVD, Apple’s iLife apps give you three ways to present your photos. For quick results that look and sound great, it’s hard to beat iPhoto. But other members of the iLife family bring their own advantages to the table (or the screen). The adjacent table summarizes them.
There’s one more option: GarageBand. By exporting a slide show and then bringing that movie into GarageBand, you can add music, narration, sound effects, and chapter and URL markers, and you can even make the movie part of a video podcast.