This is a build I've been kicking around which I have planned for my 3rd or 4th life. The idea is to combine ninja spy, wind stance, cutthroat and a lit II to do amazing damage at all levels, rock out full Jorasco dragonmarks and trapping ability while sacrificing little. This is as much a leveling build as an end game one.

Why shortswords? They're extremely flavorful and tasty for one. And also, epic cutthroat/lit II does give a small increase in DPS compared to dual lit II shortswords. Meanwhile, staying centered means I can use shadow fade for on demand invisibility and stacking blur effect and fists of darkness for a little extra DPS.

Code:
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Level 20 Lawful Good Halfling Male
(7 Monk \ 1 Rogue \ 12 Ranger) 
Hit Points: 300
Spell Points: 157 
BAB: 17\17\22\27\27
Fortitude: 18
Reflex: 20
Will: 12

                  Starting          Feat/Enhancement
Abilities        Base Stats          Modified Stats
(36 Point)       (Level 1)             (Level 20)
Strength             16                    23
Dexterity            14                    18
Constitution         16                    18
Intelligence         10                    12
Wisdom               12                    14
Charisma              8                    10

Tomes Used
+2 Tome of Strength used at level 7
+2 Tome of Dexterity used at level 7
+2 Tome of Constitution used at level 7
+2 Tome of Intelligence used at level 7
+2 Tome of Wisdom used at level 7
+2 Tome of Charisma used at level 7

                  Starting          Feat/Enhancement
                 Base Skills         Modified Skills
Skills           (Level 1)            (Level 20)
Balance               6                     9
Bluff                -1                     0
Concentration         5                    27
Diplomacy            -1                     0
Disable Device        4                    24
Haggle               -1                     1
Heal                  1                     4
Hide                  2                     8
Intimidate           -1                     0
Jump                  7                    14
Listen                1                     4
Move Silently         2                     6
Open Lock             5                     7
Perform              n/a                    n/a
Repair                0                     1
Search                4                    24
Spot                  5                     6
Swim                  3                     6
Tumble                3                     7
Use Magic Device      3                    21

Level 1 (Rogue)
Feat: (Selected) Dodge
Feat: (Past Life) Past Life: Cleric
Feat: (Past Life) Past Life: Monk


Level 2 (Monk)
Feat: (Monk Bonus) Mobility


Level 3 (Monk)
Feat: (Selected) Least Dragonmark of Healing
Feat: (Monk Bonus) Toughness


Level 4 (Monk)
Feat: (Monk Path) Path of Inevitable Dominion: Fists of Darkness


Level 5 (Ranger)
Feat: (Favored Enemy) Favored Enemy: Undead


Level 6 (Ranger)
Feat: (Selected) Lesser Dragonmark of Healing


Level 7 (Ranger)


Level 8 (Ranger)


Level 9 (Ranger)
Feat: (Favored Enemy) Favored Enemy: Giant
Feat: (Selected) Maximize Spell


Level 10 (Ranger)


Level 11 (Monk)


Level 12 (Monk)
Feat: (Selected) Greater Dragonmark of Healing


Level 13 (Monk)
Feat: (Monk Bonus) Power Attack


Level 14 (Ranger)


Level 15 (Ranger)
Feat: (Selected) Spring Attack


Level 16 (Ranger)


Level 17 (Ranger)
Feat: (Favored Enemy) Favored Enemy: Evil Outsider


Level 18 (Ranger)
Feat: (Selected) Improved Critical: Slashing Weapons


Level 19 (Monk)


Level 20 (Ranger)
Enhancement: Rogue Haste Boost I
Enhancement: Ranger Sprint Boost I
Enhancement: Extra Dragonmark Use I
Enhancement: Extra Dragonmark Use II
Enhancement: Extra Dragonmark Use III
Enhancement: Extra Dragonmark Use IV
Enhancement: Static Charge
Enhancement: Way of the Clever Monkey I
Enhancement: Monk Improved Recovery I
Enhancement: Monk Improved Recovery II
Enhancement: Monk Ninja Spy I
Enhancement: Adept of Wind
Enhancement: Adept of Flame
Enhancement: Racial Toughness I
Enhancement: Racial Toughness II
Enhancement: Ranger Favored Attack I
Enhancement: Ranger Favored Attack II
Enhancement: Ranger Favored Damage I
Enhancement: Ranger Favored Damage II
Enhancement: Ranger Favored Damage III
Enhancement: Ranger Tempest I
Enhancement: Ranger Tempest II
Enhancement: Improved Jump I
Enhancement: Improved Jump II
Enhancement: Improved Tumble I
Enhancement: Improved Tumble II
Enhancement: Ranger Devotion I
Enhancement: Ranger Devotion II
Enhancement: Ranger Devotion III
Enhancement: Ranger Devotion IV
Enhancement: Ranger Dexterity I
Enhancement: Ranger Dexterity II
Enhancement: Rogue Improved Trap Sense I