There is a running joke in the guild that Jess' raid instructions are like lectures and the rest of us are students. In keeping with the analogy, folks ask for Cliff Notes sometimes and the joke is that Vel and I are sometimes caught "passing notes in class" and not completely paying attention:
Jess: Ok, Vel?
Vel: Huh? Sorry, I was whispering K.
On a little more serious note though, I think its important for us healers to listen to all of the raid instructions and adapt our healing strategy based on that. Now I'm not talking about knowing what the boss or encounter is going to do, but knowing what your specific raid leader is instructing your raid to do.
I guess listening to what the tanks are instructed to do is a bit more obvious, such as preparing for a switch in tanking by throwing out hots to the second tank. But listening to what the dps is instructed to do is important as well. Knowing where folks were going to be and which dps was assigned specific duties ensures that healers keep them within line of sight and can perhaps pay special attention to someone who has a critical role.
Does this mean Vel and I will promise to hang onto Jess' every word? Hmmm... we'll see.