Eclipse IDE for Python and Ruby

To write code I'm using Eclipse 3.4.2 with following plugins:

• PyDev - code completion, syntax highlighting,... for Python
  Installation: Help->Software Updates->Available Software->Add Site...
  Location: http://pydev.sourceforge.net/updates/
  Select PyDev and Install
  
• Dynamic Languages Toolkit - Ruby Developer - code completion for Ruby
  Installation: Help->Software Updates->Available Software
  Select Ganymede Update Site->Programming Languages->Dynamic Languages Toolkit - Ruby Developer and Install
  
• Eclipse Git Feature - git plugin for eclipse
  Installation: Help->Software Updates->Available Software->Add Site...
  Location: http://www.jgit.org/update-site
  Select Eclipse Git Plugin - Stable build and Install
  
• Remote System Explorer End-User Runtime - great tool if you work with remote servers
  Installation: Help->Software Updates->Available Software
  Select Ganymede Update Site->Remote Access and Device Development->Remote System Explorer End-User Runtime and Install
  

If you know interesting plugins, please write comment.