1. If you are spending that much time creating a new one hour lecture to replace one by a faculty member who left, that means you are seriously lacking in fundamental knowledge in your area.
2. If you are a Microbiologist, you should not be lecturing on, for instance, Biostatistics. This is bad. Especially if your program does not have a Biostatistician to lecture on the topic.
3. It is alarming if you are solely responsible for delivering didactics to clinical students (OMSIII is clinical, correct?) without the presence of, for instance, an ID specialist, again, if you happen to be a Microbiologist.
4. How often does a new discovery at the basic science level mandate a lecture on the discovery, even one in Oncology, as a part of a pre-clinical undergraduate student's curriculum?
5. How often do significant changes occur to the pre-clinical curriculum that require significant alteration of "already-made" lectures?
6. Creating a review session for Boards is very easy, and, after having constructed an intitial review, consume very little time to update, accordingly. I am sorry, but I just can't imagine it not being so with the experience you have. You would be asked to retire if you were in the program I am a part of if that was the case.
7. The bit about learning nothing from dissection is absolutely random and has, at the least, nothing to do with anything I've written thus far in this thread, and, at the most, directly contradicts what I have written thus far in this thread.