The very first thing I did when the company I work for gave me a laptop, a Dell Studio XPS 1640, was to install Ubuntu Karmic on it. No need for windows on this thing, I plan on working, not playing.
Dell is very good about their laptops. Whenever I had a question, everything I ever needed to know about their hardware I could easily look up on the online. The 1640 is no exception with their manual.
If you have ever wanted to play a NES game on your mobile, then you might have heard about vNES. There is a J2ME version which allows it to run on most mobiles available today.
There are however a few rough edges to this application as it requires assembling the necessary files together and running a windows batch file. From a Linux point of view, I have created a replacement shell script that does a better job. It requires unix2dos, rename, and bash.