For those of us who "LARP", or still do traditional forms practice, one thing that my instructor suggested that I've found useful is this:
if you have one form that is very linear, i.e. move after move in one direction, especially stepping forward, modify the form so that you alternate stepping forward at 45 degrees to the left and right and then throwing the same move as if the opponent had been straight ahead.
My school also has some very simple two man drills that involve a block while stepping at a 45 degree angle forward.

If you want to see a high-caliber fighter that will block and work an angle moving forward, watch Manny Pacquiao (sp?).