Identifying an ext3 file given a block or inode

[Michael ODonnell]

When looking at the output of fsck as it works on a wounded
ext3 filesystem I'm wishing I knew which files are associated
with the duplicate blocks and corrupted inodes it's reporting.
It seems that I recall somebody here recently mentioning a tool
that could figure out that sort of thing but I can't find the
msg in either my own archives or on www.gnhlug.org

I do know about this:

   find /fubar -inum 123445

...for finding files by their inode number, but thought I'd
heard mention of a more sophisticated, ext3-specific tool.

Thanks.