No matter how noob you consider yourself there's always room for some geekness. I kinda like that word.It's the first thing I presumed I will be when installing Ubuntu. Ah.. Ubuntu..was just a start. Soon I started testing all kind of things..from Kolibri to ReactOS:D
But only three operating systems caught my attention.I will only provide the resources you will need to do the digging (a.k.a I will show you the road but I cannot walk it for you)
These are in no way read for ready for daily desktop use(maybe the first one but it cannot be compared to the friendliness of ubuntu)
1.GobolinuxWiki: http://en.wikipedia.org/wiki/GoboLinux
Official Site: http://www.gobolinux.org/
2.Haiku Os
Wiki: http://en.wikipedia.org/wiki/Haiku_%28operating_system%29
Official Site: http://haiku-os.org/
3. Plan 9
Wiki: http://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs
Official Site: http://plan9.bell-labs.com/wiki/plan9/download/
AmigaOS 4.1
But in order to try it, you first need to buy it (yes, there are still proprietary alternative OSes that are not made by Apple), and also buy a weird PowerPC system called "sam440ep" to run it, or have a Pegassos II system (no x86 version).
But I so want to try it. It's the real AmigaOS operating system.