In November two of the best free programs I use got updated (mozilla firefox got it's update on October):
VLC: a cross-platform multimedia player that plays most multimedia files format (like .flv, .wmv, .avi, .mkv,...) as well as DVD, Audio CD, VCD, and also various streaming protocols.
7-zip: a Windows utility for manipulating archives. Formats 7z, ZIP, GZIP, BZIP2 and TAR are supported fully and other formats can be unpacked.
Another program I recommend it's "Spybot - Search & Destroy" detects and removes spyware for Windows gets updated on it's detection files frequently. It's like an antivirus program, I have to have it in my windows OS.