I've been thinking about posting my build for some time so I thought I'd throw in my 2 cents about mesmer.
This builds goal is to put a player into a downed state from range as fast as possible. It does this by focusing on 4 bonus'; Power, Precision, Critical Damage, and Damage % increase. All of these complement each other.
I put 30 into Domination for:
Mental Torment - Mind Wrack causes 20% more damage.
Greatsword Training - +50 power while wielding a greatsword. Reduces CD by 20% on GS abilities.
Harmonius Mantras - Mantras can be activated 3 times before needing to be channeled.
30 in Dueling for:
Blade Training - +50 precision while wielding spear or long sword. Reduces CD by 20% on Spear and LS abilities.
Deceptive Evasion - Create a clone when you dodge.
Empowering Mantras - 4% more damage for each readied mantra.
and 10 into Illusion for:
Compounding Power - 3% more damage for each illusion.
I use full berserker's gears as I figure distance is all I need to avoid damage.
My utilities are : Recovery, Resolve, Concentration, Pain (16% more damage and Pain helps you spike)
My Elite is : Time Warp
For items I use full berserkers and for weapons I'll have 1 GS to build up Bloodlust stacks then swap to a GS with a Sigil of Fire. The longsword has Quickness and the offhand always has 5% damage. The offhand changes depending on what I am doing. WvWvW I'll use focus to pull foes and for speed buff. sPvP I'll use a Torch for stealth. PvE farming I'll use another longsword for the block and extra phantasm.
Also remember to use food that boosts damage as it complements the build better than most. I figure this is the most damaging mesmer build out there.