Robert Millan has released a LiveCD of GNU/kFreeBSD.
You can try it out directly booting the CD. The software can also be very easily installed to harddisk. You can find more about the GNU C Library with FreeBSD kernel
here.
Please read the 00README and INSTALL for additional notes. If you have
questions, suggestions or any feedback, please direct it to the
glibc-bsd-devel@lists.alioth.d.o mailing list or through IRC (#gnu-kbsd).