Want a REAL Challenge?

You PROGRAMMERS think you're EXPERT enough to do shit? Take some time off making your Lisp compiler and Python anti-cudder routines and join the Hurd project http://www.gnu.org/software/hurd/hurd.html . It's guaranteed to make you 3000% geekier than you already are.

>>2
They won't ask you to work on the kernel... there is no kernel!  They'll probably discuss your ideas for a secure OS though.  And they might want some help with coming up with a good language to write the kernel in.  A Lisp is the current candidate.