Here are a few mods that I thought you guys should take a look at:

Some of these mods do require Modloader: http://www.minecraftwiki.net/wiki/Mods/Modloader

Mods

Backpacks: http://www.planetminecraft.com/mod/backpack/

Conveyor Belts: http://www.planetminecraft.com/mod/conveyor-belt/

Creatures+: http://www.minecraftforum.net/topic/314680-v037181-creatures-nether-trob-and-treestalker-over-700-downloads-of-trobs/

Rei's Minimap: http://www.minecraftforum.net/topic/482147-18119pre4oct21-reis-minimap-v26/

(Mob) Spawner Gui: http://www.minecraftforum.net/topic/75440-v181-risugamis-mods-everything-updated/

in case you're thinking this, you cant use mods like this in multiplayer without modded server software

Nah, he is just mentioning some mods that are worthwhile, some being SMP compatible like Rei's Minimap.

ya and by the way masta i need help im serving my time in jail and the timer stopped at 130 minutes left

Hmm, I'll have to look at that.

please hurry becuz i have been in here for at least five minutes now and it hasnt changed

Try zombe's modpack,

Multiplayer stuff:

cloud - aka Cloud Control - If your computer gets laggy on high places this can help a bit

compass - aka Compass - Useful if you're going to use a compass

craft - aka Craft All Key - It's like having the crafting page of the wiki opened with MC, press shift to craft everything at once

info - aka World Information - If you want to find someone

path - aka Path Tracker - Good if you get lost often

sun - aka Sun Control - Don't know if it will work

There are other mods for singleplayer only, combo it with rey's minimap and you can get anywhere.

Didn't list all multiplayer features as some of the stuff can't be used on the server.