This probably doesn't go here, but reiserfstool from 
http://p-nand-q.com/download/rfstool/download.html compiles and runs 
cleanly on NetBSD, allowing read-only access to ReiserFS slices. Perhaps 
someone should add this to pkgsrc-wip.

To compile:

unzip rfstool-0.14
cd rfstool-0.14/RFSTOOL
make -f makefile.gcc3x

The resulting rfstool binary runs perfectly on -current.