WP Grins will provide clickable smilies for both the post form in the admin interface and the comments form of your blog. Like these three pals:  

You can activate this plugin in your control panel. For information on how to use this plugin, please visit:
http://alexking.org/projects/wordpress
Plugin Info: Version 1.5

cforms is a feature rich plugin for Wordpress, offering convenient deployment of multiple Ajax driven contact forms throughout your blog or even on the same page.
You can activate this plugin in your control panel. For information on how to use this plugin, please visit:
http://www.deliciousdays.com/cforms-plugin
Plugin Info: Version 10.4

You can activate the wp-email plugin in your control panel. Below picture shows the plugin as used in the ATAHUALPA theme. Notice the wp-email icon below. You can choose between an icon and a text link in the setting.

See how it works on SingCampus.com which uses the ATAHUALPA theme. Click on the icon in our posted articles [...]