TimeVault - http://lifehacker.com/275399/timevault-time-machine-for-linu...
>Mac OSX has Spotlight. I can type in something like "Canon" and get all the pictures I took on my Canon cameras. Linux has ???
Strigi - http://en.wikipedia.org/wiki/Strigi
I think that, feature-wise, Macs, Linux and Windows boxes are on about the same page. They all tend to steal ideas from each other and anything missing in the OS will be provided by a third party. I agree that Macs tend to 'just work' but this comes at the expense of only being able to work in a particular way. It's the efficiency vs robustness/flexibility tradeoff.
I've heard horror stories about laptop power management on Linux, it could definitely do with some work.