The Anesthesia and Critical Care Reviews and Commentary (ACCRAC) podcast is for more senior trainees (residents, fellows) and practicing physicians. With over 160 podcasts and counting, this resource definitely has both a track record and some steam!
Open Anesthesia is an international open access site which contains very high-level resources for advanced anesthesia trainees.
Keys-to-the-Cart - 5 minute videos on the ABA Word of Month
ABA Keywords Project - A repository where trainees can look up concepts.
Not just for surgeons, Surgery 101 has a robust set of resources for Anesthesia junior learners too.
Clerkship Series - which covers many transferable surgical concepts.
They also have general content about the operating room.