Scott Jehl has released jQuery Visualize, the plugin that groks HTML tables and generates lovely charts from it, all from a simple $(‘table’).visualize(); (lot’s of options for you to twiddle too if you want).

First, you create a bog standard table like:

<table border="0">
<caption>2009 Individual Sales by Category</caption>
<thead>
<tr>
<td></td>
<th>food</th>
<th>auto</th>
<th>household</th>
<th>furniture</th>
<th>kitchen</th>
<th>bath</th>
</tr>
</thead>
<tbody>
<tr>
<th>Mary</th>
<td>150</td>
<td>160</td>
<td>40</td>
<td>120</td>
<td>30</td>
<td>70</td>
</tr>
<tr>
<th>Tom</th>
<td>3</td>
<td>40</td>
<td>30</td>
<td>45</td>
<td>35</td>
<td>49</td>
</tr>
...repetitive rows removed for brevity.</tbody></table>

Then you visualize it. You end up with pretty graphs like these:
jquery visualize