I spent most of my time at Macworld connecting with friends and collecting promotional shirts from vendors. (I think I ended up with seven). I didn't register to attend any of the sessions except those on the show floor.
Well today I discovered that video for most (all?) of the sessions is now online for free at Macworld Encore. The presentations include the keynote slides and are very well done by some of the smartest people in the Mac community. I don't know when I'm going to find time, but I am definitely going to watch several of these.