The best way to see more samples is to download the component and open the chart list in the back end. You'll have lots of samples you can experiment with. Here are some more.
Average temperatures for a year, with a polynomial trendline added:
An Area chart plotting some simple time functions, updating every 15 seconds:
A pie chart of the most popular articles on this site. The SQL here is simply "SELECT title, hits FROM #_content order by hits desc limit 10":
Two gauges, showing the current time (UTC):