1. When you see someone that looks like they don't want to move out of your way, look above their head, they will automatically think that you are looking past them at another object and they will eventually have to make the move.
2. If you both try to move the same way at the same time, stop, stare, don't do anything and just let them dance around like an idiot.
3. When walking straight towards each other look the other person straight in the eyes and intimidate them, hopefully they move.
4. Wear sunglasses and try to repeat tip 1.
5. If you have time walk really slow, I found this very effective, people apparently don't have time for slow walkers, so they go around you.
6. Finally, Walk backwards, everyone will know you can't see them so they will move.