Czzessi has blogged about his co-worker who decided to install Kubuntu on his laptop instead of buying Windows for it, and so far, loves it. =)

"For the record: When someone who is around 45 year old and used the pc only for office and email say: "Wow, it's amazing and so easy", then Riddell, his team did a great job."

I completely agree. Most people who don't play third party games love Linux in my experience. Especially Ubuntu and Kubuntu.