FreeSMUG
It has probably been around for a while, but I just discovered FreeSMUG (FreeSoftware Mac User Group). The idea os to select and bundle various free software for OSX, covering everything from web and office applications to games and media. I already use a lot of the software, but a few new and interesting ones also showed up.
While it is possible to download a CD image with the installers for all of these programs, it would have been even easier for the end user to have a general update system (ala Fink), but I guess this might be something they are working on. (?)
Another good thing about FreeSMUG is that they provide a collection of applications that can run from a USB drive. This is great when having to use a computer where your favourite software is not installed (or you don’t have the rights to install them -> university computers).
[Other similar initiatives are the open source mac and MacLibre (a spinoff of WinLibre).]