With the release of the ICS SDK comes all kinds of new ICS goodies thanks to @P3droid over at mydroidworld we have the Roboto fonts from Ice Cream Sandwich! The new font is Sleek, Sexy, and Modern with out being to overthetop futuristic. It adds a whole new look and feel to your device, and is easily installed on any android device.
You should be rooted and you need rootexplorer, and also Jrummy's "Font Installer" from the market
download the fonts here : http://www.droidforums.net/img/roboto-fonts.zip
then in rootexplorer navigate to the .zip and uninstall it to sdcard/extracted
then open up the font installer application. Press the home button in the top left hand corner and select the option "fonts from sdcard", then just select the Roboto font from the list there will be 4 fonts listed Robotobold, robotitalic, robtobolditalic, and robotoregular. Choose one of the fonts then select install, then it will ask you to reboot the phone, select yes. Once the phone is rebooted you will have your sexy new font!