A creeper coming right into your house and blowing it up. WAIT A MINUTE, The creeper didn't just destroy the house, It blew up the house and killed you with 6 slots of 64 diamonds and 6 diamond swords in your inventory.
It was back in Alpha, not too long after I started playing (maybe a month). I was in my second single player world. I was upset of finding no diamonds, not even the smallest cave. I geared up - not just a sword, a shovel, and a pick - I got all my gold and iron and crafted it into at least a dozen picks and armor. My inventory was FULL. I had to hold some items in my crafting area, the way I used to when I needed more room in my inventory. I had found a few small dig-ins into a hill and an amazing hollowed out mountain with a lake below it. Nothing but coal. I decided to dig straight down. I had never heard the saying 'Don't dig down', because it wasn't that big a deal. You only mined when you found a cave. I didn't even think to dig two blocks side by side. When all of a sudden, I see the brightest orange as me and all my gold, iron, coal, and other burned around me.
I was playing on my hardcore world today......I've been playing on it for about 5 day's and was planning to beat the ender dragon.....i had fully enchanted armor w/ a boe and sword. (all diamond except for bow -.-) So while i was throwing the eye's of ender, i was distracted by watching them fly........before you know it, im drowning in lava in the desert......