Below is a list of some of the mods and texture packs that I have used, just for reference. 

Mods

Modloader, AudioMod and Elemental Arrows

Forge

Optifine

Inventory Tweaks

NotEnoughItems

Rei’s Minimap

ThamCraft

ComputerCraft

Equivalent Exchange

SinglePlayerCommands

Sonic Ether’s Unbelievable Shaders

Redpower 2

IndustrialCraft

BuildCraft

Texture Packs 

Sphax PureBDCraft (I use 64x)

BurntCustard’s Texture Pack (never actually used this one properly but feel I should link it anyways :D)