Is there something similar like QuickJava (Firefox Addon) for the Google Chrome?
The latest chrome (10.x) has something called "Click to play" which lets chrome display a little icon where normally the flash/java/silverlight would be. The user has to click the area to play it.
You can enable that feature by going to 'about:flags' and activate it. After that you can choose under 'Options' -> 'Under the Hood' -> 'Content Settings' -> 'Plugins' what to do when Chrome encounters a plugin.