Windows Movie Maker
I wanted to make a photo slideshow that is playable in any DVD player. The DVD drive on my macmini (which I've probably used three times ever) seems to be irrecoverably busted, so that means I'm using Windows Movie Maker.
It's actually pretty slick. You can add title screens and you can drag in photos and videos directly from windows explorer. Unfortunately, when you decide to export, your only options are 720x480 wmv or 1080p mp4.
This means I need to convert to VOB and burn to DVD. Googling around it seems the consensus (online-tech-tips.com, club.myce.com) is to use DVD Flick and ImgBurn. Both seem to be high quality open source, although the install of ImgBurn unnecessarily suggest that you also install McAfee Site Advisor and TuneUp Utilities 2014.