I have had many omg moments, so it is hard for me to choose. I will just tell you the best ones, and let you decide what is best.
On my private server, where only my brother and I play, we finally crafted our first eye of ender. I began using it, and it led me the ocean in the corner of my (item) map. I began to build a 1-block thick cobblestone bridge across the ocean. Over the days and nights, I consumed a single chest of cobblestone and three eyes until I finally reached the stronghold. Problem: it was deep underwater. I built a column of cobblestone to the stone bricks underneath, then resurfaced with barely any air. Then I placed ladders, and my brother came. I destroyed the ceiling of the stronghold (under the ladder, so the water wouldn't flow in). My brother went in first, and I followed. Unfortunately, my brother attacked some silverfish from a spawner, and some blocks holding back lava broke, unknown to me. As soon as I touched the floor, lava flowed into my block, and we both "tried to swim in lava." We returned after ages of sprint-jumping, and my brother distracted the silverfish while I destroyed the spawner. Then we explored the entire stronghold in a few seconds. It was only the portal room and a small chest room. Not even any hallways! We opened the chest, hoping for something good, but there were only five apples. We had plenty of apples from trees already. So, after all that hard work, I got death by lava and the smallest stronghold ever with the worst chest items ever.
My brother and I were hunting in the night for ender pearls, so we could activate the portal. Before that night, I was completely afraid of monsters, but after defeating a few, I lost all fear of them. After defeating so many monsters, and with leather armor, a stone sword, and a few potions, what could possibly go wrong? After I picked up a third ender pearl, I turned around in time to see something green blow me up.
Finally, we collected enough eye of ender to activate the portal. We excitedly entered, and found ourselves on a tiny obsidian platform around 50 blocks from the mainland! Luckily, I came prepared with cobblestone, so I began building a bridge while my brother made sure the enderdragon didn't attack. However, around two thirds of the way, the enderdragon plowed through the bridge, and both of us "fell out of the world."
Next time, I came prepared with obsidian that the enderdragon couldn't destroy. However, 7 blocks obviously was not enough. Luckily, I made the rest of the bridge with cobblestone without any incidents. Then, we defeated the enderdragon using only the following materials:
A stone sword for each of us.
A bow and a stack of arrows for me.
Food for each of us.
Three deaths by endermen for me.
Three deaths by endermen for my brother.
Two deaths by ender crystal explosions for my brother.
Before all this stronghold/end adventure, I had found four wolves across a small ocean, so I tamed them. However, when I swam back, only three teleported to me! The fourth was nowhere to be seen, and I soon forgot about it. The (real life) months passed. One day, after the enderdragon, my brother was exploring the (item) map around the area I tamed the wolves, and I remembered the fourth wolf with sadness. Within the next minute, to my surprise, I found the fourth wolf following me around! :blink.gif:
One time I was mining and I thought the area was deserted, and then all of a sudden I come across a very dark cave with some guy's stuff that he lost after he died and he had full diamond armor, 15 diamond in inventory, diamond pic and diamond sword. I was scared, thats all I can say.
As I was walking back to my house, it had gotten quite Dark, I noticed a Creeper, and I ran as fast as I could, Into my Hedges into my house...Creeper right behind me, And I didn't Close the door in time, And I saw something Terrifying!
The Torch was blocking it from exploding, But I tried to get my diamond sword..........Lets just say I changed my floor to Lapis that day. : P