Interactive and Informative Tooltips in Tableau

Creating informative and interactive tooltips on a dashboard:

• Font Choice: Tahoma (default), Calibri and Cambria all look very sharp and don't get pixelated.
• Rename the Measure Names so they are clear
• Use for Annotations: make them a bit smaller and a lighter font than the rest of the tooltip
• Exclude command buttons from all sheets in tooltip for a dashboard. (Have to do the sheets individually from what I can see)

Adding a URL to a tooltip: Viz Candy - Finishing Touches
Customizing Tooltips: Interworks (has section on dynamic tooltips based on selection)
Hover Help section: Data Revelations
Basic Tooltip layout information here from Tableau.
Conditional Formatting: Tooltip Conditional Formatting

Workbook Examples: 
Navigation to Other Sheets/Dashboards
Dynamic Tooltips
Disc Golf / Conditional Formatting