Amazon’s Editors have released 100 Mysteries and Thrillers to Read in a Lifetime. (This is similar to their 100 Books to Read in a Lifetime that they released around the beginning of the year.)
I have read 10 and reviewed 6 on Bookwi.se (links to Bookwi.se Reviews): Encyclopedia Brown, No Country for Old Men by Cormac McCarthy, Storm Front by Jim Butcher (Dresden Files), Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson, The Girl With the Dragon Tattoo by Stieg Larsson, and the Spy Who Came in from the Cold by John le Carré
Check out the list and see which ones you have read.