You probably already have seen this, but dude this has come a long way since I last saw it. Still a bit rough around the edges on the ui side of things but functionally it’s a great free perl ide. The ability to use the standard eclipse debugging views is really cool as is the regular expression evaluation view. You need to install the PadWalker module to use the debugging functionality but you can install that straight from the ActivePerl package manager if thats your flavor.
Update site: http://e-p-i-c.sourceforge.net/