Figured I ought to contribute my self-proclaimed most versatile zerk mes build~!:
Link to the build on gw2skills.netBasics: 6 / 4 / 4 / 0 / 0
Greatsword and sword/torch, pretty much everything zerk. If you don't have all zerk or want more of a health buffer, swapping some for soldiers/knights pieces is fine too.
I've been using this build plus or minus some minor changes for so many months now, I can't even remember. I don't like switching around traits and gear and stuff all the time, so I've developed an awesome all-around build that does a ton of damage backed up by some pretty darn good survivability that I use in wuv, pve, fractals, w/e.
Have you ever heard the adage "all good mesmer builds are weak to conditions"? Well not this one :p I used to use Prismatic Understanding with my torch offhand because it's amazing and with things like Decoy and Mass Invis it's just soo good. But that's only strong against physical damage; still weak to condi's. So I moved more points into the Domination trait line to get Cleansing Conflagrations which is one of my new favorite mes traits. It's soo damn good