The More Docks the better!
“The other day I became annoyed with how many icons I was starting to accumulate in my Mac OS X Dock (Application Launcher). I thought to myself, geez it would be really handy to be able to switch between a couple of predefined Docks. A few googles later and I stumbled upon a killer-app, DockFun!.”
Does this sounds like you? Check out DockFun.
Another great alternative is Overflow launcher.
http://www.stuntsoftware.com/Overflow/
Overflow is definetly worth a look!