Best possible duo
 

What would you say is best possible duo? given all clickes and BIS gear.

Warrior/Warrior

Asked and answered a thousand times.

And the answer is; it all depends on what you want to do!!

Farm items in dungeons solo or duo? Cleric/Chanter all day long.
Duo end game dungeon crawl and open world content? Monk/Shaman will let you.
Have a whole lot of fun as an unconventional duo? Bard/Rogue is insanely awesome fun.
Be the duo that can start something for anything? Cleric/Warrior just need to fill the other slots.

Long story short, do whatever you want and make it work. Because it all works.

I am going with Batman and Robin as possibly the best duo of all time. In name alone, they are iconic.

monk/shaman or monk/cleric

cleric + enchanter with a hasted, charmed pet (will out-dps any monk)

Ace and Gary

Mnk + shm or enc + clr, depending on what you want to do.

Charmed pet (hasted)
Slowed mobs
CH on pet
Cleric stuns and heals on charm break

It's truly a retardedly overpowered duo and in the hands of skilled players basically feels like cheating. Enc/Clr synergy is nearly perfect. Monk/Sham can run around in gear worth literally 20x what the Enc/Clr are wearing and still not outperform. Charm is just too powerful, and the Cleric makes charming safe and easy.

Not best possible but some of my favorite duos are:

Wolverine and Gambit
Tom Hanks and Wilson
Pee Wee Herman and His Bike
Han Solo and Chewbacca
Roddy Piper and Keith David in They Live
Beavis and Butthead
Goku and Vegeta
Warf and Captain Picard
Fry and Bender
Simon Belmont and His Whip
Zack Morris and AC Slater
Bo Jackson on the Los Angeles Raiders and Bo Jackson on the Kansas City Royals
Mike Haggar and Cody
Pokemon Red and Pokemon Blue
Mario and Luigi
Big Daddy and Little Sister
Spider Man and Venom in Separation Anxiety on the Super Nintendo
Gordon Freeman and His Crowbar
Niko and Roman Bellic
Boba Fett and Dengar
Roger Murtaugh and Martin Riggs in Lethal Weapon
Doc Brown and Marty McFly
Vincent Vega and Jules Winnfield
Michael Jordan and Scottie Pippen on the '94 Bulls
Nagafen and Vox
Wolverine and Nightcrawler in the X-Men Arcade Game
Shadow and Interceptor in Final Fantasy VI
Jean Claude Van Damme and Donald Gibb in Bloodsport
Carl Weathers and Arnold Schwarzenegger in Predator
Taco Bell and Pizza Hut in the same fast food restaurant