I found this nice little list of all the classes somewhere, I forget where though, nor can I remember if these are bare minimums only:
------------ Druid ------------
* Balance
7,000 Health
8,500 Mana
550 +Spell Damage
6% Spell Hit
15% Spell Crit
* Feral (Bearform)
12,000 Health
20,000 Armor
415 Defense Skill with the Survival of the Fittest Talent
20% Dodge
1,000 Attack power
20% Crit
* Feral (Catform)
7,500 Health
2,000 Attack Power
23% Crit
* Restoration
7,000 Health
8,500 Mana
1000 +Healing
90 mp5 while casting
------------ Hunter ------------
7,500 Health
4,000 Mana
1,600 Attack Power
5% Hit
18% Crit
------------ Mage ------------
7,000 Health
8,500 Mana
650 +Spell Damage
6% Spell Hit
15% Spell Crit
------------ Paladin ------------
* Protection
9,000 Health
9,500 Armor
490 Defense Skill
* Healing
7,500 Health
8,500 Mana
1000 +Healing
80 mp5 while casting
------------ Priest ------------
* Healing
6,000 Health
9,000 Mana
1,100 +healing
100 mp5 while casting
* Shadow
7,000 health
8,500 mana
550 Spell Damage
6% Spell Hit
------------ Rogue ------------
7,000 Health
1,250 Attack Power
8% Hit
~19%-24% Crit (varies according to spec)
Pair of 71+ DPS weapons
------------ Shaman ------------
* Elemental
7,500 Health
8,500 Mana
600 +Spell Damage
12% Spell Crit
5% Spell Hit
* Enhancement
8,000 Health
7,000 Mana
1,100 Attack Power
18% Crit
10% Hit
* Restoration
7,500 Health
9,500 Mana
1,000 +Healing
90 mp5 while casting
------------ Warlock ------------
8,000 Health
9,000 Mana
~650 +Spell Damage (varies according to spec)
5% Spell Hit
~12% Spell Crit (varies according to spec)
------------ Warrior -----------------
* Protection
11,000 Health
11,000 Armor
490 Defense Skill
30% Avoidance
*Fury
9,000 Health
1500 Attack Power
9% Hit
23% Crit
*Arms
9,000 Health
1400 Attack Power
27% Crit
5% Hit