Here are a few more examples of common blocks that are often removed.
<layout version="0.1.0">
<default>
<!-- remove compare products -->
<remove name="catalog.compare.sidebar" />
<!-- remove community poll -->
<remove name="right.poll"/>
<!-- remove newsletter -->
<remove name="left.newsletter"/>
<!-- remove paypal -->
<remove name="paypal.partner.right.logo"/>
<!-- remove wishlist -->
<remove name="wishlist_link"/>
<!-- remove catalog compare -->
<remove name="catalog.compare.sidebar"/>
<remove name="right.reports.product.compared"/>
</default>
</layout>