I really liked this one. Looks like a bunch of small jade slabs arranged in a sculpture. Someone else beat me to it but was kind enough to hold it up for a picture. Its a Haworthia truncata (if you follow the link you will see one that looks like a pre-chopped bell pepper!). This plant somehow reminded me of the flagstone sculpture found in the Prescott's Yavapai College Sculpture Garden.
bent spines produce a weird look compared to the more common surgically straight needles found on our native prickly pear cacti
These are the two that decided to hitch a ride home with me. The one on the right produces some odd looking red flowers that hummingbirds will like. The one on the left is a Senecio vitalis and the one on the right is a Pedilanthus macrocarpus. Or you can call them Fred & Wanda.