So many to chose from, but I'm going with the assassination of the treacherous Chicken Cat.

I can think of a few things..

but the first thing that popped to mind, was that one bus accident involving a few crew leaders, maybe even godfathers, amongst other important people. 

Ahhhh. Good times, I guess!

I'm gonna go with the Ganelon RHM deception, or else the curious case of ShannonWhelan's LHM Scooter.

I don't remember when it was, but it was during one of the wars and we were looking for GFC, don't remember the name, full BGs, massive cannon and me with my shitty BGs and shitty gun, for fun, I enter his name and PP and the game goes "FAILED" and I was not even proed, I was like "What the frick" I almost shit myself and I barely had time to run lmao

"Most memorable" is heavily subjected to my awful memory, but-

The hardest I've cried over losing a crew was when I was RH to (forgot his character name...damnit...but his real name was Jon and he was from England) and we got into a massive war with (also forgot who) but it turned into the whole "Team Good Guy/Team Bad Guy" thing that lasted for freaking ever. CL died and I immediately set up for the rest of the crew so we could keep fighting. That lasted all of...what...three hours?

I don't know if I cried because we all died, or because it had just been such an exhausting war and I'd been up for a couple of days. :P