Recently I switched back from Ubuntu to Gentoo. When I made the switch, I decided to bring my ICC license with me. Since that time I've managed to get 795 ebuilds to install using ICC 9.1 and 164 which I've had to revert to GCC 4.1 for compile time and/or runtime reasons. If it sounds like this is something you'd like to try out, you can find some of my tools dumped over at GoogleCode: [gentooiccduo]. Which is admittedly a bit of a misnomer as the tools are no longer specific to Intel Core Duo machines. :)
(I should disclaim that these "tools" of which I speak are nothing more than a handful of modified ebuilds, a bash script, and a compendium of CFLAG exclusions)
