The most recent report from the International Panel on Climate Change estimated that the global average sea level will rise between 0.6 and 2 feet (0.18 to 0.59 meters) in the next century (IPCC, 2007).  More recent reports estimate the possible rise of 1 meter by 2100. (see here full artlce)  These predictions are difficult to understand without a visual illustration.  The following image from the Data Blog of the UK Guardian does a great job of simply illustrating what a meter of more could mean in reference to common landmarks.