I'm a Linux SUSE user, but somehow I also use Ubuntu a lot of times on my other machines... you may ask why I haven't migrate totally to SUSE? Well, Ubuntu is such a great distribution and I myself also recommends this distro to friends. I like SUSE because of its almost perfect integration to KDE, but when it comes to GNOME, Ubuntu has done a very good job, is very easy to use and stable.. I've been visiting several help sites for Ubuntu and below is a list originally collected at All About Linux Blog. I totally agree with Ravi that these sites are great Ubuntu help sites...
Automate all the Ubuntu housekeeping tasks
9) Automatix - This is a script which can be used to get mp3, wmv, quick time, encrypted DVD support and more on Ubuntu and all this as the name indicates rather automatically. All the user has to do is run the script. Unfortunately, this project is not supported any longer but the users can still download the script and use it.
10) Easy Breezy - On this site you can get another script which helps in automating the tasks of getting proprietary file support in Ubuntu Breezy v5.10. The author claims it to be a safer alternative to another well known project.