Comment Not just for the beginners (Score 4, Informative) 349
I downloaded Automatix and used it to install a few things, but I didn't use their GUI. I just went through the script and manually executed the commands that installed the components I wanted. I heard a lot of things about how Automatix can screw up your system, but this way I knew exactly what it was doing, and it really didn't take that much more effort than the GUI.
I think the best part of Automatix is it's basically an aggregation of procedures to install the most popular non-standard components. Instead of making a google search and spending 15 minutes copying commands from a howto, I can just copy a whole block from the Automatix script. I highly recommend it even if you're experienced with linux. Just give the script a once-over to make sure you're ok with what it's executing.