The slackermedia project was started by Klaatu from his own installation process of all his typical multimedia tools on the system he used for freelance work (now at his day job at a film institute).
The idea for the logo (ie, the modified Slackware logo) was contributed selflessly by monsterb.
basictracks (that's a name, not an adjective) contributed some Rosegarden and Lilypond notes.
jlindsay contributed a librubberband fix.
Acid Phlux has been doing much-needed QA on the sbopkg queue files, finding typo's in the code, and so on.
lostnbronx was a test subject and bug reporter
robinds was a test subject and bug reporter and helped fix an encoding issue with xmlto's html output
Delwin and his wife donated skyehaven.net space for the Multimedia Sprint hosting and figured out how to allow people to cherry-pick individual files from the full set
The Kernel Panics donated space for a Multimedia Sprint mirror
The whole podcasting community helped publicize and seed the sprint
Lots of friends have assisted in FINDING the Sprint content, and helped Klaatu learn what html and css he knows in order to make this site
Bill von Hagen donated his dot-emacs file which he started in '85 (or earlier?) and has been perfecting ever since
Chess Griffin wrote sbopkg, and Slakmagik contributed a bunch of fixes to the chapter on it.
Free Software and Open Source make it ALL possible
And so on and so on! Your name probably isn't listed here simply because there are so many people who have helped on the project. To list them all would probably break the interwebs.
The Slackware and Slackbuilds teams do all the real work :) so please support their work.