As I said before I have managed to have a go with Ubuntu on an older system and I'm very impressed. The amount of features available from the offset is a lot more than what you get with a cheap Windows OS. Some Apps include open office, Pigeon, FireFox virtually any open source application available and the list of games are also impressive even with a more expensive version of Windows I haven't seen as many games in one menu.
I had a go Playing Chess and the "GNU" (as it's referred to in Linux) keeps beating me, any time I play against the Windows "CPU" I always win. This just shows you how much more care has gone into developing even the smallest feature available in the Linux OS. Another thing I quite like, is when you click the shutdown option. In Linux once you've clicked on shutdown the computer just turns off in an instant, whereas in Windows once you've clicked shutdown it comes up with messages "application still running do you want to close", then it says "Logging Off" followed by "Windows is shutting down". Basically twenty minutes later and finally the computer turns off.
I've barely scratched the surface with what this OS can do but so far it has me hooked. Not much more has to be done now to convert me from an everyday Windows user to a dedicated Linux die hard.