I may be imagining things, but I seem to remember seeing a program a while back that allows you to group application together (by type, or whatever) into a single "group". This "group" would be the only remaining icon in the dock: essentially it's like making a folder with application shortcuts, but smooth and elegant. Problem is, all I can remember is that the resulting dock icon was a black square with rounded edges... Not a lot to go on, eh? If anyone has any idea what I mean, or knows of some other program which would do the same...... 
