Meaningful Stories by roBurky - Better emotions.
NPC Control by Paulson - No random townies.
Whim Overhaul by Bienchen - Better whims.
First Impressions by Lumpinou - Adds first impression sentiments.
More traits in CAS by thepancake1 - Allows five traits for sims instead of three.
Walk Normal by Scarlet - Stops all the silly walk styles from different moods.
Lifetime Aspirations by Ky-e - Changes the aspirations into one big lifetime goal instead of the checklist tasks.
Weather app by LittleMsSam - Allows us to check weather in all the worlds via the phone.
Personality Mod by MissyHissy - Adds whims relating to the Sims 2 personality types.
Those are my must haves, I also have a ton of autonomy mods and minor fixes but they are to many to list.