Heh, I have a Dell 23" LCD, and it weighs nothing compared to most 14" CRTs, even the Macintosh Colour Display (which is pretty light for a CRT, I have to admit)

Its funny to think, the "Getting Started" guide that came with my LCIII suggested not to place a monitor on top of the machine any bigger than 14", since the LC case wasn't designed to support big monitors, however I'd have no trouble whatsoever parking my gargantuan 23" on top of there