The Minecraft creepers would just like to remind you that while it's all well and good to use a bed to skip over nighttime, and it's nice to get excited about taming a wolf, don't get so excited that you run out of your house first thing in the morning to see if wolves spawned without looking out of every window first. We are silent, we are relentless, and we will get you when you let your guard down. SSSSSS BOOM!
Minecraft 1.5 is headed our way next week with a bevy of updates including statistics tracking, achievements, powered minecarts, lightning, snow, and rain. The Nether is a zone I've never tried going in single player, but apparently one of its inhabitants will be coming out to play in the normal world in this update. If one of the many harmless pigs -- normally just a pork chop food source -- is struck by lightning he will become a zombie pigman.
For a test video of what this is looking like so far, check after the jump.