I was using a custom xslt to display all the field names  in Content Query Web part. Very useful to debug while writing custom style sheets.

I needed to see values along with it so this XSLT will display values along with Field names

 <code>

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 <xsl:template name="AllFields" match="Row[@Style='AllFields']" mode="itemstyle">
    <xsl:param name="CurPos"/>
          <xsl:variable name="SafeLinkUrl">
            <xsl:call-template name="OuterTemplate.GetSafeLink">
                <xsl:with-param name="UrlColumnName" select="'LinkUrl'"/>
            </xsl:call-template>
        </xsl:variable>
        <xsl:variable name="SafeImageUrl">
            <xsl:call-template name="OuterTemplate.GetSafeStaticUrl">
                <xsl:with-param name="UrlColumnName" select="'ImageUrl'"/>
            </xsl:call-template>
        </xsl:variable>
        <xsl:variable name="DisplayTitle">
            <xsl:call-template name="OuterTemplate.GetTitle">
                <xsl:with-param name="Title" select="@Title"/>
                <xsl:with-param name="UrlColumnName" select="'LinkUrl'"/>
            </xsl:call-template>
        </xsl:variable>
        <xsl:variable name="LinkTarget">
            <xsl:if test="@OpenInNewWindow = 'True'" >_blank</xsl:if>
        </xsl:variable>
        <div id="linkitem" class="item">        
            <xsl:for-each select="@*">               
                    <span style ="font:bold">    <xsl:value-of select="name()" /> </span>  : <xsl:value-of select="."/> <br/>                    
              </xsl:for-each>
        </div>
        </xsl:template>

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</code>