Hey guys,
Ever since the information about the global Paragon system get released, there haven't been much else to do in the game, other then leveling characters in preparation.
So i thought i could share what i have been doing towards this goal.

Route:
1:The festering woods (for valor stacks) 1.5: If we only got 2-3 stacks in woods, we go Leoric mansion for 1-2 stacks
2: The Fields of Misery
2.5: If The Decaying Crypt and/or Scavengers Den spawns, clear them out (always made sure we had 5 stacks before doing so)
3: Repeat

Doing this run with a geared group, you can gain 350-400 mil xp per hour on average

Some "Pros" for doing this act1 run
*You can get 5 stacks in Festering Woods very fast (sometimes even 6stacks: 2 elites in Crypts, 3 elites outside + 1 out of 2 random Events)
*You can get +1 stack very easy in fields of misersy (random chest outside - "the old man" + chest in random dungeons)
*You got a decent chance to find ether 'Scavengers Den' or "Decaying Crypt" (both are awesome for exp/hour)
*All Mobs in fields are pretty fast (you can pull them all together with a wd using locust swarm - pestilence rune)
*Inside the "Decaying Crypt" you can make all those female zobies double or even tripple spawn using locust swarm - pestilence rune (afik they spawn 3 3 2 1 zobies and yes they all give exp + loot)
*95 % of the Mobs (except trees and beastes myb will die to a decent stacked crit rend of 2 or 3 barb in a 4 man Party)
*The map layout is always the same in fields (easy team coordination)
*Group composition: 3x WW/Rend barbs + 1x puller Which doctor

Reasons for a WD
To kill elites to get to 5 stacks very fast (use fire bats + Voodoo+ Mass Confusion/hex 20%dps + Soj)
To lure all Mobs together in fields of misery using locust swarm - pestilence rune + place your Voodoo im big packs
To make all those female zobies in the decaying crypt double or even tripple spawn using locust swarm - pestilence rune

Reason for barbs
To find all those elite outside the crypts in Festring Woods very fast ( barb is most effective due to perma Speed buffs)
To freez the elite with a cold soj while in festering woods (they wont run out of the wd's bat range that fast + mass dps)
To kill all the trash the wd lured together using rend with massive crit dmg and crit chance up to 93 %

So onwards to the video showing how its done, and proof for my claim in title
Diablo 3: Level 1 to Paragon level 100 in 34 hours, featuring a average 405mil xp per hour run @ http://www.youtube.com/watch?v=dEyZKTq5-vk
(showing gear and build at the end of the video)

I picked this "only 3 stacks in woods" video to avoid the accusations for a cherry picked run. You can top out at over 450mil xp per hour in single runs, if you are lucky...

I would also like to add that its even possible to do it quite a bit faster faster then 34 hours. I was playing mostly solo in the start, and that slowed me down.. I would guesstimate ~30 hours is possible with the right "know how" and group.

If anyone have any comments or questions, feel free to ask