I'm not sure if this has been posted here or not, but I come to bring word of a video put together by zusaij. Its an 11 minute collection of special tricks and jumps and all kinds of happenings from our speedruns posted at HSH over the years across all Halo titles that have been ran, and it also features not only the SP runs, but the Coop runs as well. It's a nice, but rather quick ;o, trip down memory lane. It may be rather difficult to see the runs in places because, especially for the older Halo 1 and Halo 2 runs, TVs and capture devices weren't as good back then, so you may have to squint in a few places.
Be sure to check the description for the list of songs, and for the full list of active halo runners to date. Also give zusaij a nice comment while you're at it!