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Is there a command for the “Workspace Switcher”?

Easy workspace switching has always been one of the strongest feature of linux. It's a huge productivity boost not unlike having multiple monitors but without the need to carry a large desk and monitors with you all the time :-) Good implementations have existed in different desktop environments since the early 90s.

I thought OSX was catching up when they came up with 'spaces' but they made this very slow two steps plus animations process that made working with multiple 'spaces' quite a pain. To my horror it seems Ubuntu (in my case 12.04) copied this OSX UI and made it the default.

Is there a way to install a one click workspace switcher? It would be neat if it dynamically showed me an image of the desktops like it used to, but mainly it just has to be single-click.

I know there are keyboard shortcuts but I also need a solution for when my hands are not on the keyboard.

The other problem with the current workspace switcher is that when I have a lot of apps opened, it gets pushed down to the 'stacked icons' part of the dock and it then becomes an even slower process to change workspace. I can't seem to be able to move this icon (I guess another question would be how to do this). As one of the most often used dock icon, shouldn't it be at the top of the dock?

EDIT: I was just told by this site to explain how this is different from other questions about workspace switchers. The important thing is that it has to to be a single-click mouse manipulation (as it has been in Unix type desktops since about 1995). Other questions only mention keyboard shortcuts or 2 or more steps solutions. To me this is unacceptable for an action as frequent as desktop switching.