Glitching in halo 2 was what made it such a great experience for me, and why the gameplay had such replayability. I knew half of these, and I was disappointed that there was so few glitches in halo 3. I wouldn't use them in matchmaking, as in halo 2, you couldn't really then either, as you needed multiple people in certain places. But it was great fun learning new glitches, then showing them off to freinds.