View list of teasers wrapped in  instead of How can I view my teasers in &lt;li&gt; instead of in the default &lt;div&gt;? I find that changing the &lt;div&gt; to &lt;li&gt; in node.tpl.php doesn't work since &lt;li&gt; needs to be wrapped in a &lt;ul&gt; tag.
You could use the Views module to output an unordered list of teasers. You can use the HTML List display type, along with a Node: Teaser field.