How do I get the window jelly effect? [duplicate]
You’ll want to enable “Wobbly windows” plugin in the CompizConfig Settings Manager. If you don’t have it installed, run sudo apt-get install compizconfig-settings-manager or search for it in the Software Center.
- Warning: What are some of the issues with CCSM and why would I want to avoid it?
If you want to enable wobbly windows but don't want to take the risks involved with using CCSM, you can also set this option using Ubuntu Tweak, under Tweaks > Compiz Settings > Desktop Effects:
See How do I install Ubuntu-Tweak? for installation instructions.