I've been using this for crosstalk with rt and trac installs for some time - being something of a command line addict I find that the simple but relatively sane UI provided is not only rather good but very easy to shell script around for custom stuff.

Plus the "wget <url> | perl" installation is so wonderfully trivial it makes me incredibly happy (and I have some truly weird and hacked up perl installs on certain dev boxes and none of them have managed to fsck up the installer yet :)