For the most part, I just like listening to the lectures. It's essentially like attending a great, concise lecture from a well-known speaker every time I drive to and from work. Also have them converted to MP3 so I listen to them on my iPod at the gym, traveling, and walking the dogs. These board review courses, combined with EM Audio digest, EM:RAP, and USC Symposium Essentials seems to make for a pretty painless way to assimilate great info during time that otherwise is "wasted". I would point out though that these really are not a substitute for the core texts that residents should be reading (Tintinalli, Rosens, Roberts/Hedges), they're just a great addition. The only real significant drawback are the hefty price tags. Fortunately, my residency picks up the bulk of the tab.