5 months is a long time to be away from work. I actually was back at work the day after graduating from SBOLC, Thursday.
Seeing a lot of my coworkers (and my boss... a pretty good guy that shares my somewhat off sense of humor), meeting new coworkers, seeing how some projects have proceeded and, well, it felt good to be needed (the past 5 months left me somewhat feeling like a cog...). People were happy to see me, willing to listen to my input and it was interesting to catch up on some events. Hopefully it will be a while before I am not excited to go to work, because right now it's a pretty exciting prospect.
Nothing like being away to give you new perspective in life.