Indeed, there is a module called File::ReadBackwards available through CPAN. From the description in the man file:

This module reads a file backwards line by line. 
It is simple to use, memory efficient and fast. 
It supports both an object and a tied handle interface. 

It is intended for processing log and other similar text 
files which typically have their newest entries appended 
to them. By default files are assumed to be plain text and
have a line ending appropriate to the OS. But you can set
the input record separator string on a per file basis. 

Autark.