My list of favorites in no special order

• Web page addresses and e-mail addresses turn into links automatically.
• Allowed HTML tags: <a> <b> <address> <blockquote> <br> <caption> <center> <code> <dd> <del> <div> <dl> <dt> <em> <font> <h2> <h3> <h4> <h5> <h6> <hr> <i> <img> <li> <ol> <p> <pre> <span> <strong> <sub> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <u> <ul> <tr>
• Lines and paragraphs break automatically.
• [node:123] - insert full text (themed by theme('node'))
  [node:123 body] - insert node's body
  [node:123 teaser] - insert node's teaser
  [node:123 link] - insert link to node
  [node:123 collapsed] - insert collapsed node's body
• You may use [view:viewname] tags to display listings of nodes.

More information about formatting options