Oh, yes, the memories... good ol' Slackware.
Was my first Distro as well; used to be a FreeBSD guy until I discovered Linux (Don't know how I'd missed it) and at that time the only real alternatives were Mandrake (aka Mandriva nowadays; I always thought it sucked), SUSE (kinda, sorta; not really stable or freely available), Debian (Should've been my first choice but it wasn't for some reason) and Slackware.
Now, Slackware offered a pretty steep learning curve for someone totally new to Linux, but I still thought it was great because everything fit so nicely together. E.g., if you started a compile of KDE, you knew it would succeed no matter what, because the Distro as a whole was so vanilla, and everything "just worked".
Nowadays I stick to Arch, Fedora and Ubuntu generally, because I like an environment that "just works" with minimal effort. I no longer have the time to compile my own Kernel etc (sadly), and I like some of the new technologies that "cutting-edge" Distros offer, like KMS+nouveau+Plymouth, or a HAL-free and xorg.conf-free X setup, or drakut, or grub2, or PackageKit, ConsoleKit, DeviceKit etc. Try to get all of those to work together on Slackware!
Anyways, back to the topic: I don't think it'd be worth it to use Slack on the Pandora. I mean, why? Ångström is as barebone it can get... and I could understand you if you'd want to install e.g. Ubuntu for the additional packages and support, but Slackware? Come on, it's too big of a step back in time...