I've just come across, in the final chapter of Zalezac's Thunder and Lightening, the closest thing I've met to a perfect sentence anywhere on SOL:
She was wearing a thick flannel nightgown that was so far from sexy that it was sexy.It's got that just-right balance between rhythm and content, and between familiar and striking, and between objective and full of characterization. Plus "flannel" is such a lovely word. I love that sentence to pieces. One day, if I keep practicing, I'll be able to make sentences like that least once a story, and if I try really hard, once a chapter -- or so I tell myself.
What other examples of excellent single sentences have you met lately?