Having more than ten 'Linux Live' in a single MultiBoot DVD or USB media was impossible but for geeks.
Now with SARDU this is available to everyone with a few clicks and without any knowledge.
With some mini distributions you can start a working operating system in seconds, even with outdated PCs. Some distributions use less than 200 mega, but this does not mean they are resource-poor. Some are modular and customizable, like Nimblex, Slax or xPud, and all have a practical GUI (Graphical User Interface). You can use them to surf the net, save data, burn...
There are live distributions which focused on security and penetration testing like as BackTrack (able to test and crack the wifi) or others with a software suite used for hardware diagnostics, stress testing, certification and benchmarking platform like as Inquisitor or Phoronix Test Suite.
With Limp (Linux Multimedia Player) you can transform your PC as multimedia player. This offer a better
interface to play all Video and Audio formats.
You can start and use complete distributions like Fedora, Kubuntu and Ubuntu, Linux Mint or YLMF. This way
you can find an easy way to approach Linux.