When I converted my CD collection to mp3 several years ago, I used abcde.
The workflow basically went like this:

• Insert CD


• Run abcde


• abcde ejects the disc


• Repeat

I'm looking for a similar workflow for converting my DVD/Blu-Ray collection as well, but so far haven't found anything quite the same. I'm sure I could script something with Handbrake's CLI, but I'm hoping someone else has already solved that problem for me.