I've followed this distribution for a while, and though never installed it, I have added the good stuff which I'm pretty sure is also in the Ubuntu repository's.
There is a new update 5.0 which has had a bit of press from slashdot.
There are some things which again I might grab from the repository as it is based on Ubuntu.
Dans Guardian:: Great for filtering things. This will be on the kids PC's when they old enough
Open Song:: This has got to be the best opensoure projecting software out there. We use it at Ranges all the time for worship stuff.
There are also a number of study guides and bibles. The one which looks like I'd use the most gnomesword.