This is just pure nostalgia. Halo 3 jumps are so cool. You actually feel you've earned getting to a glitch spot. And there's no soft kill. It's great. I remember exploiting most of these + some that I didn't know before.
Working on one, I've submitted one on my YouTube channel: youtube.com/theredeyeddevil. I created a jump map for halo reach and completed it, however I have yet to post a video for it, although I have completed it. Its kind of short but there are some cool jumps in their. I will post one soon though.
Not to burst you bubble but Every one of these jumps that you used equipment and explosives can be done without them and most of them quite easily for that matter. Some weren't even 'jumps' exactly. Don't get discouraged though, just try learning some techniques used for tactical and trick jumping and maybe look up some jumps to see if they can be done without hurting yourself or using equipment (EVERY one you did).
I will be uploading a video soon for Halo Reach: It will be called Halo Reach: The Old Factory Jump Course. It will be on my channel later tonight and also on forghub. Check it out and tell me what you think when you get a chance.