Multiple Nested Tabs
The example below demonstrates the possibilities of multiple nested tabs including the use of multiple themes. Here I have a single Aggregator which includes 3 more Aggregators (each with different skins) ... Tab 1, Tab 2 and Tab 3. Each of these Aggregators has a couple of sub tabs which are text modules. In addition to this, Tab 1-3 is an Aggregator itself (Exploding Boy TabMenuC skin) which includes a Documents (Tab 1-3-1) and Links (Tab 1-3-2) module. As you can see, the combinations are endless and only limited by your imagination!
To see the full effect, hover over Tab 1, then select Tab 1-3.