Mods are epic!

Modloader:
http://www.minecraftplaza.com/modloader/

Too Many Items:
http://www.minecraftforum.net/topic/140684-12512w18a-toomanyitems-in-game-invedit-may-6/

Craftable Spawners:
http://www.planetminecraft.com/mod/craftable-mob-spawners-103710

Minecolony:
http://sites.google.com/site/minecolony/home