As Nexus One owner most probably you don't know, that it is possible to listen to FM Radio with it. Basically you can't, because the stock kernel doesn't support it and there is no application available.
I don't know whether Google knew it and has done it on purpose: the Nexus One chip is capable of receiving FM radio signal. How? Read more here.
Yesterday I downloaded the newest ROM from CyanogenMod and was surprised that among some new added apps I found a new application called FM Radio. I tried it and it worked perfectly (see the picture). While writing this article I was listening to BBC2 Radio, which was reporting about the huge spending cuts programmes of the UK government approved in the parliament yesterday (20/10/2010).