Hi, new member here-- inspired to post, because of this question.
My recent favorite is the Espresso Chocolate Cake (now retired) from Proof Bakery in Los Angeles. I got interested in the recipe after seeing this unlikely BuzzFeed clip online (whoa, what's up with 30+ *million* views!! I wondered):
https://ytcropper.com/cropped/n45cd99135de59e
and later found the recipe in the LA Times. Takes a few days to make the component parts--- at least, if you work full-time like me--- but otherwise easy. The final photo is from the online recipe-- and made by the bakery, not me! I include it here to inspire you to Extreme Baking Greatness, not yet achieved by me. But: delicious and fun, for a first try!