For those who have the Logitech G15 keyboard, you might want to set up some of your keys like I have. Win 7 has a key combination that accesses the taskbar, you press the Windows key plus the number of the icon as it appears on the taskbar. For instance if Firefox is the second icon, you press Win + 2.
So I have 6 programs that I regularly use more than others, I've got them all on the taskbar and I mapped 6 of my "G" keys on my keyboard for those icons/programs. So when I press the key, if the program is not open, it opens it; if it is open, it brings that window into focus; if the window is already focused, it minimizes it. Really, really cool. Once you get used to it, it's so much more convenient than using the mouse to switch between programs.