Since I posted the previous version of the solution that utilizes the Google Chart Tools / Interactive Charts (aka Visualization API), Google has updated their API and made the previous version more or less obsolete.

I have long thought of making a generic solution for pulling information from another list, kind of like you would do in Excel with the function vLookup.

This is a solution for creating charts directly from SharePoint lists using Google Visualization API.

Add this code to a CEWP below the list view, and it will add a hover function to all hyperlinks including an image

SharePoint: Filter a Calendar View Based on User Profile Property

Here are a solution for toggling the columns visibility in a list view by adding a checkbox row above the list view.

Edit SharePoint Field properties, including lookup column list association, with client side code only

This solution adds auto complete functionality to a standard SharePoint people picker

Add character or word count to SharePoint multi line plain text field and restrict input length