On this page you can find various links to sites featuring smilies I've come across and I thought where worth visiting. More smile history related links can be found on the page Smiley history: The histories of the smiley face
Other smile sites
Crack's Smilies =)
Big collection of forum sized smilies. They also have kaos and game sprites.
You might have seen one of their Have a ... posters. They got a pretty entertaining website featuring letters they have received and other cool posters.
His description: "A personal hand drawn collection of smiley face icons each with their own unique expressions and ethnicity."
Make sure you have a look at them I think they are very cool.
Smile Greeting Cards
If you can manage to wade through all the popups, 123Greetings.com has some nice and cheerfull eCards.
Software / Products
program to send, capture, organize and share smilies.
The Harvey Ball World Smile Foundation
"Established in 2001 to honour the name and memory of Harvey Ball, the artist who in 1963 created that international symbol of goodwill, the smiley face."
More smile history related links can be found on the page Smiley history: The histories of the smiley face
The describe themselves as: "The MoodSmilies website is designed to display your current mood at your website. It is not necessary to have a website to display your mood, but if you do you can get the code from the top left menu and add it any where at your site to display your mood to your visitors and allow them to comment as well!"
Non smiling faces related sites
The title pretty much sums it up. If you're bored this is the site to go to to find some entertainment.