One of the best Freeware apps for the Mac on the web today. The improved stability makes SlashDock a perfect 5 (stars). I use this dockling constantly throughout the day to keep abreast of OSX and general technology news. I'm addicted.
If you are new to OSX and need to learn as much as you can about it from the various sites across the web, SlashDock will be pivotal to making your searching/learning more productive.
p.s.- I don't know this guy, and I'm not a friend of his trying to convince you to DL his app. I just really like it.