For those of you (in the US anyway) enjoying a day off and BBQ-ing, here is another cool new tool I came across earlier today over on Malware Forge, called nPeID.  Like my packerid.py, it uses Ero Carrera's pefile package.  I'll be checking it out later this afternoon.  Also, C. S. Lee has a nice little post on using the editcap program from the wireshark package.