Boo, get home from work, have some dinner... log on for 5minutes to check the AH... "battlenet maintainence has started" BOO!!!
Storm, I'm running quite a similar spec right now as I am farming Inferno butcher too. I play with 400+ ms so I find ignore pain is great as sometimes I desync quite easily and find my barb is standing on an acid pool or in a desecration instead of 1/2 a screen away.
Got frenzy/sidearm + revenge with 30% rune on my mouse
Ignore Pain/leech
Furious Charge+Dreadnaught as well (I love the charge! it's never left my bars since I got it. Charge + Cooldown reduction rune = NM mode cleared. Massive packs = Huge smiles as you gloriously smash them into goo
WotB + Insanity
Warcry + resist rune
Ruthless + Weapons Master + Pound of Flesh (somehow I have +6000 health from globes on gear and this has saved my ass soooo many times, what a mad talent) as passives
With 150 MF gear and decent DPS (17k), plenty to roll Jailer/Butcher in Solo games or help people through the act in a co-op game for waypoints (can only carry 1 person else the mobs scale too quick). I actually like exploring all the different caves too, and the good thing is that the Neph Valor buff rewards you for this!
Act 2 is a totally different story. I actually went throwbarb for a bit to get through the first part of the act (Hooray for making throwbarbs viable! I thought it made things a LOT more bearable and kills the wasps in a couple hits as well!), then used a kind of knockback build with bash/seismic slam for knockbacks combined with ground stomp, has worked very well so far especially in the sewers where there is often no room at all to kite, and been making decent progress, I was in the middle of getting Zoltan Kulle's body I think.
I have also used WoTB + EQ combo for burning down boss packs and I think I might try farming Madga in Inferno with this method provided that I don't die often to the champion packs.
The annoying thing is sometimes in inferno the game is a little really cheap. Oh yea lets put a stairtrap of invisible snake guys with invulnerable minions, vortex, frozen and arcane right next to the waypoint of the sewers! So you can't run away and get blown up in seconds, sooooo cheap!!! And lifeleech is so nerfed on Inferno, which is pretty sad (2 good 1 handers with healthsteal, 3% lifeleech passive, lifeleech belt, running frenzy in middle of hell mode was quite fun!)
I saw some guy in the official Bnet forums make a build about a WW barb so looking foward to that eventually with some gear

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As well as near-infinite WoTB mode which looks hilariously fun and I can't wait to try it out when servers are back up.