Favorites
Buzzword - Seriously awesome word processor web app
Design By Humans - T-Shirt design contest
Songza - Music
Kingdom of Loathing - Funny game

Useful Software - Freeware
Firefox - Web broser
TextWrangler - Text editor, where I do all my coding.
Quicksilver - Applications navigator
Adium - Multi-protocol Instant Messenger
VLC - Media Player
Blender - 3D Graphics Creation & Animation
X-Chat Aqua - IRC client

Software - Just for Fun
APOD Grabber - Astronomy Picture of the Day thing
MacSaber - Turns Mac into Jedi Weapon, generates realistic light saber noises, when you wave your computer around.
InsomniaX - Keeps computer awake even when closed. (Awesome when used in conjunction with MacSaber)

Site Credits
YotoPhoto's search by color.
Stock.xchng - YotoPhoto search result.
Flickr - YotoPhoto search result
FreeFoto - YotoPhoto search result
Wikimedia Commons - YotoPhoto search result