Speechcraft

Prodigy: The Diplomat (Level 20)
Instantly grants "Masquerade" and "Leadership".

Eloquence (Level 20)
Persuasion is 30% easier. Intimidation is twice as successfull.

Bribery (Level 30)
Unlocks dialogue option to bribe guards to make them ignore crimes.

Disarming Charisma
These perks demand one piece of expensive clothing, at least two pieces of clothing total, and neither heavy nor light armor.

Clothing classified as "expensive":
 * Fine clothes
 * Embroidered Garment
 * Radiant Raiment Fine Clothes
 * Refined Tunic
 * Embellished Robes
 * Ulfric's Clothes
 * Emperor's Robes
 * Party Clothes
 * Redguard Clothes
 * Fine Raiment
 * Sheogorath Outfit
 * Wedding Dress
 * Fur-Trimmed Cloak
 * Hammerfell Garb
 * Noble Clothes

Masquerade (Level 50)
While wearing a faction's full set of armor, you are recognized as a member of that faction.

Grand Facade (Level 95)
Unlocks "Dark Cowl" crafting recipe at the tanning rack.

When commiting crimes while wearing the "Dark Cowl", the crime gold will not be related to your true identity, unless you are seen equipping or unequipping it. While wearing the "Dark Cowl", one can not initiate conversation.
 * Ingredients for "Dark Cowl": 2 leather, 3 leather strips

Battle Anthem (Level 20)
Unlocks lesser power "Battle Anthem". When used, all non-hostile actors within 100 feet range deal 25% more melee weapon damage for 2 minutes. May be used every 5 minutes.

Leadership (Level 35)
Grants lesser power "Leadership". When used, opens up a dialogue box that allows you to recruit up to two mooks of different classes. Two recruited mooks may not share the same class. Recruiting a mook costs 1000 gold. Only works while not in interior cells. Recuted mooks are at 40% of your level. When using Leadership and selecting the mage, "Julian, Elite Wizard" might spawn instead of the normal mage hireling. Julian has additional Conjuration spells and is at 80% of the player's level. Spawn chance is 5%.

When using Leadership and selecting the warrior, "Kaige, Elite Berserker" might spawn instead of the normal tank hireling. Kaige uses two-handed swords and has additional perks boosting his heavy armor rating and two-handed weapon damage. He is at 80% of the player's level. Spawn chance is 5%.

Loyalty (Level 45)
May recruit up to two mooks of the same class.

Merchant (Level 40)
Can sell any type of item to any kind of merchant.

Investor (Level 50)
Can invest 500 gold with a shopkeeper to increase his available gold permanently.

Fence (Level 70)
Can barter stolen goods with any merchant you have invested in.

Master Trader (Level 85)
Every merchant in the world gains 1000 gold for bartering.