Scatterplot without linear fit in seaborn

This doesn't directly answer the question, but may help others who find there way here who just want to do a plain old scatter plot.
As of version 0.9.0 seaborn now has a scatterplot method.

import seaborn as sns
sns.set(style="ticks")

df = sns.load_dataset("anscombe")
sns.scatterplot("x", "y", data=df, hue='dataset')

set fit_reg argument to False:

sns.lmplot("x", "y", data=df, hue='dataset', fit_reg=False)