Spidey

I also use awesome, but have tried KDE 3 and 4, Gnome 2 and 3, XFCE,
LXDE and some others. I found out that I want to know what are the
programs that I run, so the meta + r shortcut combines perfectly, and
make me think about what is that launcher software, that compositing
software, that pdf viewer, that file manager, etc.

How would you do that? I'm currently using ~amd64 and can't yet use
sets for some reason.

You almost got it:

$ eix -c w32
[N] dev-util/w32api (--): Free Win32 runtime and import library definitions
$ eix -c win32
[N] media-libs/win32codecs ((~)20071007-r4): Windows 32-bit binary
codecs for video and audio playback support

It's also a use flag for vlc and mplayer (that's for my setup,
probably other players support it too), it will pull the package for
you.