One graph that is often put forward to illustrate the link between global temperature is the Archer 2006 book graph (shown below). It looks as if there is a simple linear relationship between temperature and sea level with 20m/degC! From that you would guess that we would be facing maybe 50m of sea level rise. However, there are several weaknesses with this graph.
Rohling et al. 2009 has plotted sea level against Antarctic Temperature over the past 5 glacial cycles. From that you can see that the relationship between temperature and sea level is not linear. During glacials where ice volume was large the sea level response to a was also large. In interglacials, with much less ice volume, the sea level response is much smaller.
From the graph it is estimated that for present day we get 3-5m of sea level rise per degC of antarctic warming. Taking polar amplification of (here taken to be 2x) into account we can convert that into a 6-10 m/degC of global average temperature change. (Note that the actual polar amplification valid for dome C is probably somewhat smaller than 2.)
I think that the Archer graph is a nice illustrative cartoon. However, it is very unfortunate that it is being picked up in official climate reports like the german WBGU 2006. I have had to defend some of my own work because it was in conflict with a present day slope of 20m/degC.
In this figure below i put the rohling curve on a 1961-1990 baseline, converted to global temperatures and also added projections (from Grinsted et al. 2009). I used 1.5 as the polar amplification because we are talking about the Antarctic.
The cyan variations include variations of the form:
[EDIT: Perhaps the pliocene can be used as an analogy, but i question the present quality of the data. A quick google gave me this quote: "Geologic estimates of maximum Pliocene sea level thus range from +5 to +40 m relative to present, with +25 m typically used by the modeling community." from PLIOMAX: Pliocene maximum sea level project. Combine that with uncertainties in temperature and i wonder if it can give any useful constraint on these types of graphs.
EDIT2: Found a mistake in the polaramplification. H/t to Bart Verheggen.
EDIT3: Added my take on the Archer Graph based on Rohlings curve. I focused on warmer climate.]