As I slowly RTFM learning command line, I am amazed by how much can be accomplished by the basic command line (BASH etc).
Starting with 5 VOB files, I decided I wanted one. No easy way to do this in Wintendo, but I happened to think of cat on Linux.
cat zombie* > zombie.vob
~3 minutes later I had the 5 combined into one big file.
Nothing major, I just thought it was neat;-)