The Ultimate Stunting Tutorial is a tremendous effort by dozens of people who came together in the name of doing awesome stuff in the original Halo. Flips. Explosions. Balancing acts. Vehicle launches. Defying physics. UST has it all.
Best of all, as the name implies, the video series—which takes place entirely in Blood Gulch—teaches you how to do all 400 stunts that people have discovered over the years.
From the UST website:
You can think of these stunts as tricks or glitches. They're unintended aspects of the game which players have discovered and expanded upon over the years. Many video games have unintended aspects to them, but Halo: Combat Evolved is unique in that the range and depth of these aspects is extremely impressive. This world - the world of stunting - has attracted numerous players over the years. Some players have taken the casual approach of doing a few stunts for a bit of fun. Other players have sought stunts which could give them an advantage over their opponents in multiplayer. Finally, there are the few who have dedicated themselves to the creativity and community which defines the world of stunting. I am one of these few. We call ourselves stunters, trickers, or glitchers. We dedicate ourselves to stunts because we enjoy doing them. For us the goal of the game becomes to find and do stunts rather than to fulfill the standard objectives. This is our world.
To give you a taste of the UST, here's the intro video:
The rest of the series can be found on a YouTube playlist compromised of 43 different videos, all packed with different types of stunts that you can recreate.
Here are a few highlights.