If you have a Synology NAS you may have realized you can install all sorts of open source software on the box by ssh'ing in and using ipkg to install just about anything. I am thinking of installing bind to run my own DNS server. Working to get rid of my dependence on any hosting provider (good bye 1and1!). I feel the Synology NAS can do a better job with lots more control and capability.
In any case this website has over 30 hacks on making your Synology do some amazing things. As if the "apps" capability is not enough, here is more!
UPDATE: There is now a commynity of Synology hackers online with their own repository called SynoCommunity. And this fellow has made several very interesting products run on Synology.