Shared lib?

[Mark]

If I have some jars that I would like including into ALL of my jobs is 
there some shared lib directory on HDFS that will be available to all of 
my nodes? Something similar to how Oozie uses a shared lib directory 
when submitting workflows.

As of right now I've been cheating and copying these jars into the 
hadoop lib directory on each node. I figured there had to be a better way.

Thanks