The new editor came without the community favourite - smiley faces or emoticons. Below I offer an administrator hack that will give that functionality back to the people.
The snippets button is a really powerful way to provide user with short cuts to standard code blocks. You set the contents of the list in the /Providers/HtmlEditorProviders/Telerik/Config/ToolsDefault.xml file.
Simply place the block below just before the < / root> element and upload. The img tag in the name allows the editor to display the icon in the list. It uses the files that came with the FCK editor but, of course, you could also customize these for you own icons.
<snippets>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/regular_smile.gif' /> Smile">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/teeth_smile.gif' /> Big Smile">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/sad_smile.gif' /> Sad">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/confused_smile.gif' /> Confused">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/cry_smile.gif' /> Cry">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/embaressed_smile.gif' /> Embaressed">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/tounge_smile.gif' /> Tounge">
snippet>
<snippet name="<img src='/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/omg_smile.gif' /> OMG!">
snippet>
snippets>
EDIT: add this line to /Providers/HtmlEditorProviders/Telerik/EditorOverride.css to make the button look like a smiley
.reTool .InsertSnippet{background: url('/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/images/smiley/msn/regular_smile.gif');}