My fondest memory is a good one week span inbetween jobs where I played Halo 2 nonstop on the service. I wound up getting a massive Legendary symbol tattoo on my back the last day, only because ..well hell I was probably insane.
I've had some epic Halo 3 custom games though, including one that lasted for 5 hours. I think we all had 600 + kills and the CTF game almost ended 30 times. Nothing says "epic" like saving the flag capture by shooting a rocket into their base at the last moment.







