Same with the configuration management room. I was able to catch the first talk but there were so many people waiting outside throughout the entire day it was difficult to get back in later.
I normally try to get a few cups of coffee into my system, and start making a list of things that are most important to accomplish within the amount of time I have to work for that day. When I have a defined list of objectives, it makes it easier for me to try to cross things off the list. If that fails, I'll end up watching an episode or two of a tv show, playing an instrument or something away from electronics mostly so I'm not staring at the problem I'm blocked on.