4/7/12 was the “Repopulate Halo 3 Event” where many montagers would host lobbies with their subscribers. It was a hectic, fun-filled day and I believe we raised the servers by up by a few thousand players. This video is over 8 minutes long (grab some popcorn), and it features clips from/on many well-known YouTubers (TranQ, Ruxs, OrphanSlayer, AfterFraG, Rusty Panda, etc.) and has a nice balance of sniper multikills, unique WTF moments, funtage clips, and live reaction randomness. This will have you reminiscing on the golden days of Halo 3 and your fun memories in it 
Enjoy!