Are you talking about the "Switcher Bar" program? The Icon kinda looks like two arrows pointing in opposites directions in sorta of a square shape? (going from memory on what it looks like. :) )
If that's the one you're talking about There are many other programs like it. Some free, some not. I use vBar myself. Pretty much does the same thing (ie. lets you switch between open programs and lets you shut down specific ones or all of them at one time) but it's icon has a battery indicator on it too. Plus it's free.
http://www.freewareppc.com/utilities/vbar.shtml
Wisbar is another good one that's free too.
http://www.freewareppc.com/utilities/vbar.shtml
Both, in my opinion, are better than the "Switcher Bar" that came preloaded. Check it out and you can decide.