I've been using iFlash, http://www.loopware.com/software/iflash/ , lately on my Mac and, aside from the funky format it wants the word lists in for import, it's a nice llittle program. You can even export the cards to your iPod which is pretty handy.
I put a few decks up on the forum for sharing them, http://www.loopware.com/forums/ , one of which is a 1300+ card list of Finnish acronyms and abbreviations which are really nice to have if you like to try and read the newspaper.
Supposedly a new version of this software is coming along soon which will add the ability to use pictures, fix some of the funky format for import I've asked to have fixed and some other UI things that should make it easier to use as well.
I'm trying to finish the word list from F4F 1&2 but there are a lot words and it takes a bit of time to type them all in. If anyone tries it out and finds errors in any of the decks, please do send me an email with corrections.