Currently gaming fever is on me. Me and my friends group play Counter strike every evening on our Laptops. Just few weeks ago i installed Ubuntu on my laptop but for gaming , i uninstalled it and installed Windows XP.
But again after few days, the gaming fever came to ground, and i installed Knoppix linux on my Laptop. I have fad of using various Operating systems. I tried many Operating systems (After computer upgrade, almost any OS was running my system) like different Linux flavors, SUN Solaris, all most all windows versions [Including Longhorn, Home Server edition, etc] I was trying Knoppix first time. Its almost same as Ubuntu, and yes its free (But, No free CDs, Download it and burn it and use it)
Currently Linux is gaining popularity. Many people , many offices are switching them selves to Linux. I am planning to do some Linux certification for my future. As a computer science student, i personally think that Open source has a bright and wide future. There are thousands of Linux versions available to download and use. Most of them are free but few are paid.
Check out the list of various linux distribution.
I recommend you to use Linux operating system over other operating system, there are many reasons. But few of the most important are “Very less virus threat (negligible)”, “Free of cost”.