One of the things that I feel makes truly memorable writing is the author's use of imagery. This is one of the things I'm really trying to improve on in my own writing.
Here are a few examples from some of my favorite authors:
From Tithe, by Holly Black:
"Waves tossed themselves against the shore, dragging grit and sand between their nails as they were slowly pulled back out to sea."
Also from Tithe:
"She laughed at that, silvery cold laughter that rose up out of her throat like crows going to wing."
From Wicked Lovely, by Melissa Marr:
"The Summer Girls were like plants needing the nutrients of the sun to thrive; they couldn't be away from the Summer King for long, or they'd fade."
From Fablehaven, by Brandon Mull:
"The demon sprang forward with a roar like a thousand cannons firing together. A black wall of shadow flowed from Bahumat like a wave of tar."
Can't you just see that wave of tar or hear the silvery cold laughter rising up like crows going to wing?
Do you try to include imagery in your own writing? Do you have any favorite authors whose imagery you admire?