I am really impressed with this app for DVD to H.264 conversions. It handles multiple VOB files with ease and the results are nice and bright, unlike most other apps I've found which tend to give very dark video results. I suspect this is due to MPEG Streamclip using the QuickTime encoder whereas most other apps use the ffmpeg or x264 encoders.

The only thing it doesn't handle that's of interest to me is DVD subtitles, so I'll have to use another app for that. Luckily, very few movies have subtitles that are necessary to enjoy the movie (e.g. Star Wars Episode 4).