Diablo – Increases spirit regeneration by X per second

Here's the comprehensive list based of Blizzard's skill calculator and this list of affixes. No base skills increase Arcane Power regeneration, but many skills have a rune that does so. I've only listed those affecting regeneration, as per your question. Many more runes, etc, reduce the Arcane Power cost of the skills or increase the maximum Arcane Power the Wizard can have:

1. Active skills:

   • Magic Missile (Attunement) - Whenever Magic Missile hits a target you gain 4 Arcane Power.
   • Shock Pulse (Lightning Affinity) - Every target hit by a pulse restores 2 Arcane Power.
   • Spectral Blade (Siphoning Blade) - Every enemy hit grants 1 Arcane Power.
   • Electrocute (Surge of Power) - Gain 1 Arcane Power for every enemy hit by Electrocute.
   • Arcane Torrent (Power Stone) - Every missile hit has a 2% chance to leave behind a Power Stone that grants Arcane Power when picked up.
   • Magic Weapon (Conduit) - Attacks have a chance to restore 1 Arcane Power.
   • Familiar (Arcanot) - While the Familiar is active, you regenerate 2 Arcane Power per second.
   • Energy Armor (Absorption) - You have a chance to gain 4 Arcane Power whenever you are hit by a ranged or melee attack.

    

2. Passive skills:

   • Power Hungry - Gain 30 Arcane Power whenever you are healed by a health globe.
   • Astral Presence - Increases your maximum Arcane Power by 20 and Arcane Power regeneration by 2 per second.
   • Prodigy - When you deal damage with a Signature Spell (Magic Missile, Shock Pulse, Spectral Blade, Electrocute), you gain 4 Arcane Power.

    

3. Item affixes:

   • Foreboding / Ominous on Orb or Wand or Wizard Hat - +Arcane Power on Crit

Deadly Reach is a faster spell than 100 Fists and Crippling Wave as the animations are much quicker (based on some brief observation), unruned your ranks would be

1. Fists of Thunder
2. Deadly Reach
3. 100 Fists or Crippling Wave.

The rune bonuses are as follows:

• Crippling Wave gives +5 per critical,
• Deadly Reach gives +10 per critical, and
• Fists of Thunder gives +15 per critical.
• 100 Fists has a 15% chance to give +15 (not tied to criticals)

Assuming you're fighting "lots" of mobs mostly in front of you, Deadly Reach will be the best, but if they're around you, Crippling Wave would take over.

If you're fighting a single mob (say a boss), 100 Fists would be the better than the others until you get nearer to 10-15% critical chance, then Thunder would take over.

In any event, Diablo III doesn't rely on "optimal builds" like WoW, but allows you the flexibility to use creative builds. Use skills you like.