How to completely uninstall gnome-shell and all extensions?

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http://askubuntu.com – I'm having a bit of trouble getting the gnome-shell to work ever since I installed an extension (I don't know which) on 11.10. So what I would like to know is: How can I completely uninstall EVERYTHING gnome-shell related (all the extensions, gnome-tweak-tool etc), everything - so I can start fresh and re-install 'em all one by one. Thanks in advance. EDIT: After a long and hard search (for me anyway) I found it: sudo apt-get remove gnome-shell-extensions-* (HowTos)