Sorry, but OS X just sucks when it comes to slideshows. There's something wrong at Cupertino, when such a basic need is not addressed in OS X - and which is done on windows with absolute ease. I have a huge collection of photos, and I'm just disgusted every time I want to show friends a slideshow from a trip. You simply cannot do it on OS X. Preview doesn't work beyond a few photos - select all, click slideshow, and if you have more than a few photos, it'll show a dozen or so in random order (NOT in the order in which they are in a folder), and then quit. If I try to show, say 2000 photos, I have to do it in chunks, or else Preview freaks out. Windows users can't believe OS X doesn't have this simple capability. I would guess that maybe iPhoto has this ability, but I absolutely hate iPhoto and I eradicated it from my computer - I'm sure it's just great for others, but for my personal needs it's a worthless, slow, bloated app which does not allow me to control how I want to deal with photos. So I went looking for third party apps which can do this SIMPLE thing - just display my darn photos in a freakin' slideshow! After reading a lot of hype about Boinx FotoMagico, i tried it out. What a joke. It wasn't even able to import my folder with 2500 photos - I got the spinning pizza for 5 minutes then it crashed. I uninstalled it immediately from my computer. So now I turn to the experienced folks here: is there such an animal on OS X as a simple slideshow app which can handle large numbers of photos (and not iPhoto!!)? Or am I condemned to use a windows computer every time I want to have a slideshow?