Ok these first few I consider essential, after these are ones I HIGHLY reccomend but you arent cutting your own throat by not having them. Now when dowloading mods a few notes 1) ALWAYS read the readme file that comes with them, you wont be able to use them properly witout it 2) With mods that change the game rules you are best off starting a new game as some of the things wont work properly in a game you started before you added the mod (Graphics mods are an exception, they dont usually change the rules):
Essential:
Better Heads: This revamps the look of every NPC in the game. They go from looking rather ghastly by todays standards to quite impressive indeed. (Some of the women actually look quite shagable now <img src="/ubbthreads/images/graemlins/tongue.gif" alt="" />) http://thelys.mwsource.com/index.php?morrowindmods=True&authorpage=Motoki
Morrowind Visual Pack (v2.1 & v2.2: There actually 2 parts to this mod and beware, it is HUGE (60 meg for first file, 40 meg for second). You only have to download the first part, the second is optional, but I reccomend both. It replaces almost every world texture in the game with a new high defenition, high detail texture. The world truly looks vibrant and alive with this mod, everything looking much sharper and clearer. (In the second download area, the screen shots at the top and left are the original morrowind textures, the bottom and right are with this mod. Check em out) First: http://khalazza.production.free.fr/view_plugin.php?ref=21 Second: http://khalazza.production.free.fr/view_plugin.php?ref=29
Super Adventurers 3.0.2: This is my favourite balancing mod, basically un modded morrowing is a little easy. This toughens things up, adding not only more creaturs but making them a little meatier. It adss a BUNCH of other stuff too including new weapons and other neat little bitties. Read the extensive read me as after this add on, your morrowind experience will change. For the better: http://www.rpgplanet.com/morrowind/adventurers/adventurers/super_adventurers3.html
(Note: If you have tribunal you have to enable Superadventurers AND adventurers_tribunal)
This mod includes the timemod which makes the day twice as long. I find this much more realistic, I recomend you enable it in data files at the same time you eneable superadventurers
Highly Reccomended:
Atmospheric Sound Effects - 3.0 (+Updates): This mod plus its three updates make the game sound so much better. It takes some setting up. Your best bet is to download the original file install it but DONT change the morrowind.ini (The readme will tell you to do so but there are some errors). Download and install each of the updates. With the updates comes a handy program called mini.exe that will alter morrowind.ini for you in a quick and easy manner that saves all the hard work (and errors) of the initial install. Remember, you will need the original file plus its three updates. You can get them from Morrowind Summit.
To give you an idea of how detailed this mod is; when in town you will hear dogs barking, cats meowing, bells ringing, footsteps, voices, hammers, saws and general ruckus. When its raining you wont hear people, they are all inside, at night things are much more subdued you'll hear cats and dogs and the occasional lonely owl and perhaps the distant whisper of furitive footsteps out on nightime business. Inside buildings when its stormy you can here the storm raging outside and see lightning flashing in the windows (In tents you can hear the canvas slapping so hard youd swear the place was going to blow away). I actually turn the music off when using this mod. Its that good.
Real Signposts: This alters the textures for all signposts so that the name of where its pointing to is actually WRITTEN on the sign texture in a neat morrowind style font. Not essential but cool <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /> Morrowind summit for this one: http://www.rpgplanet.com/morrowind/modcontrols/mods.asp
Ultimate Giants: Giants stalk Vaardanfell. These guys really are huge. Also added are dragons and bunches of other neat stuff (Imagine smashing down a skeleton and having its arm chase after you?). This mod add so much neat stuff I consider it essential but at a whoping 50 meg download I put it in highly reccomended instead. I honestly cant imagine playing without being afraid that that tree trunk over there was actually a giants leg <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
PumaMan who made this is a Mod God. Ill just give you a link to his modpage and you can pick what you download. Its ALL good. (His wilderness sounds mod can be run alongside the above sound mod for an even richer sound experience)