The game is being played for quite a while now and many people seem to be veterans already. You certainly have some fancy stories to share :)
My biggest facepalm moment was when I evolved into onos and got shot as egg at 99%. Usually I cloak my egg to prevent just that, but it was not available in that match...
edit: it already worked, i remembered my favorite moment: it was in a heavily turtled game quite some versions ago (no onos, no gas-vs-sentry). marines had ~6 sentries near the powernode in atrium. i managed to fly through as lerk and started to shoot the powernode, diagonally below the bridge. i brought it down quite a bit when i heard a sound and stopped. i managed to cloak just in time before a marine went into sight. he aimed in my direction for a while but then he actually walked away, no alarm or scan or even powernode repair. i resumed as soon as he went away, finally taking down the node which basically ended the match.
My 2nd favorite awesome moment (apart from those final hits on a hive to finish it off right before dying) was killing an onos and two fades in a single shotgun-clip (I know that was a team effort but it felt great).
There were probably even better moments but I can't remember them right now... This thread is to bring them back to memory and to prevent other moments/stories from getting lost.