Tanks a lot
Based off of Endur's character, "Uncomplicated tank-like character", I would offer the following keeping more in line with the premise of a tanks that can take a ton of damage, and I don't have the Complete Warrior yet, so this is all from the source books.
Level 10 fighter, level 10 dwarven defender
Basic Dwarf, change at your decresstion
Alignment: Any lawful
Feats
dodge
Combat Reflexes
power attack
improved Critical Long sword (or whatever turns your crank for a one handed weapon)
Improved Initiative
Spring attack
Mobility
combat expertise
whirlwind
weapon focus (pick a weapon)
weapon specialization
improved combat expertise
32 point buy
str 16 +6 enhancment bonus = 22
dex 12 + 2 level = 14
con 20 +3 level + 5 inherent +6 enhancment bonus =34
int 8 + 5 inhernet = 13
wis 8
chr 6
hit points: 10d10 (fighter) + 10d12 (dwarven defender) + 3 (toughness) + 240 (con) = 265-463 hit points + 40 hit points when in defensive stance
armor class: 10 +1 dex + 9 armor +5 shield + 5 dodge (4 if they are not your dodge target) up to +10 for combat expert + 5 for amulet of natural armor = 39-50 + 4 for dodge in defensive stance up to a 54
initiative: +8
Fort: +7 (fighter) +7 (dwarven defender) + 12 (con) = 26
Will: +3 (fighter) +7 (dwarven defender) -1 (wis) = 9
Reflex: +3 (fighter) + 3 (dwarven Defender) + 2 (dex) = 8
Immune to crit hits and sneak attacks (armor)
Damage Reduction: 9/- 6(dwarven defender) 3 (armor)
skill ranks (does not include modifiers or what and when you use your tome to raise you int)
Intimidate 23
languages: common, dwarf
magic items
Manual of Bodily Health +5: 137,500 gp
Manual of Intelligence +5: 137,000 gp
Adamantine Long Sword: 3000 gp
Ring of Regeneration 90,00gp
Amulet of health +6 36,000
gauntlets of STR +6 36,000gp
Full plate +1 armor of the deep, heavy forification made of admantine 100,000gp
Tower shield +1 with improved fire, cold and electric resistance 126,000gp
Amulet of natural armor +5 50,000gp
This gets you within the 600-650k range and gets you a tons of fun stuff. the shield will ward off 20 points of fire, electric and cold, the most common adamge types, and the armor adds 3 to your damage reduction while allowing you to breath underwater, for the evil DM's, and the heavy forification makes you immune to crits and sneak attacks.
Your defense, not including fighting defensively if you wish, can raise your ac up to 54 and your hit points will be in sane and because of the ring of regen, you won't mind taking a few hits for the team.
The feats give you the best of defense while allowing you the smack down with feats like whirlwind, improved crit, and weapon specialization.
His saves are fairly good, if you want better, change in an item for a ring, but I can tell you right now, a demi lich would even have a hard time sucking your soul.
Hope this helps, enjoy.