It was pretty good. Learned a lot about the "quieter" protocols that are involved.
Some of the surprises that really hit me was the steganography portion. There are a few articles out there that explain it well.
There were some hiccups in the class with getting some of the labs to work, but overall, I would say that if there is a chance you'll be looking at VoIP, then by all means attend this course! Once I get dug out of the plethora of stuff now that I'm back at work, I'll try to break it down into the daily stuff covered.
Network+, Security+, C|EH, SnortCP, GSLC, PITA certified (yes, Pain In the A$$), United States Marine, thru and thru