Doctor Who Mod

The Doctor Who Mod made by IkingsSGCa and some others is a mod that is not yet out yet but already it is one of the biggest mods in history with over 400 clients it is currently (at the time this post was made) in the heavy development stage. There will be new mobs like Daleks, Cybermen, Adipose, Zaralock, and the judoon, there will also be Items such as the sonic screwdriver, pollen, Dalektanium and more. The Tardis (time and relative dimensions in space) and the Tardis key will also be present in the mod
link:http://www.planetminecraft.com/mod/wip-doctor-who-client-mod---full-minecraft-retrofit--over-300-features-and-counting-ikingssgc/

Too Many Items

this is an in game inventory editor it is very good this is an image of it and it will have any items from mods that you put in the minecraft.jar file 
Link:http://www.minecraftforum.net/topic/140684-100-toomanyitems-in-game-invedit-nov-29-saves-enchantments/

Modloader

First thing you should ever install to almost any minecraft.jar is risugami's modloader. It lets mods work together and not bug each other out and it also lets items work with the original minecraft items
link: http://www.minecraftforum.net/topic/75440-v100-risugamis-mods-everything-updated/