Hey, you guys ever try the Somnia mod? It's basically where the world still simulates while you sleep. Crops grow, mobs spawn (curse those dreaded creepers!), and furnaces keep smelting. What I really like is that it's actually compatible with most other mods, because it just changes the game mechanics of the bed item/block. Nothing more. No new block id, nothing. Plus, if you have a clock, you can select the exact time of day you want to wake up. Plus you can sleep both at night and at day. Only bad part is that it disables itself in multiplayer. :( Oh well. Pretty awesome, though, right? Plus, the installation is insanely easy. Open up minecraft.jar with 7zip or WinRAR, drag the ModLoader files to the desktop, paste it in the minecraft.jar folder, opened in the archiver, drag the Somnia mod files onto the desktop, paste those in there, close everything, load up Minecraft, done. It's all loaded up and everything. (Of course, delete META-INF in the jar if you have it.)