Here are a few recent ones Breaststroke:

Prince Ea - The Brain, talks about the history of great thinkers and the brain as an organ
Fortilive - Fist Fights, talks about the history of hand to hand combat
Canibus - Merchant Of Metaphors is a James Bond type of story
Roc Marciano - Firepower, he takes you through a dangerous trip through the ghetto

and some of my favorite older ones I have in rotation now:

Big Pun - Fast Money, intense chase tale, vivid lyricism by Pun
Funkmaster Wizard Wiz - Bellevue Patient, is comedy like Slick Rick
Smoothe Da Hustler - Hustlin', he is one of the best and overlooked drug dealing MCs ever imo