I just want to say that this sequence of blog posts by Niall Cooling is a great, detailed discussion about mutexes and semaphores.

• Part 1: Semaphores
• Part 2: The Mutex
• Part 3: Mutual Exclusion Problems

This is really well done.

Empire State Of Mind - Forest Hills State of Mind with Billy Eichner and Rachel Dratch:

(via Gothamist)