Having completed ToC10 last night for the first time with 3 guildies and some PUGs, I am pleased to announce we downed all 5 sets of bosses with only a single wipe on the champions! Yay!

I have modified the following guide, which I found on the wow forums and fixed some of the details. You can copy-paste each line from here into your wow chat window.

Note: the faction champions are a bitch, and this section needs a total re-write.

Coliseum Northrend Beasts

/rw === Gormok the impaler ===
/rw Tanks setup a disarm rotation (else rogue / dps warrior assist)
/rw Tanks switch at 3+ stacks IF the OT is cleared of debuff
/rw DPS - ALWAYS kill the snowbold adds, THEN the boss whenever they appear

/rw === Acidmaw & Dreadscale ===
/rw 1 tank on Acidmaw, 1 tank on Dreadscale (slow kiting)
/rw Always point the worms AWAY from the raid!
/rw All dps burns down ACIDMAW 1st (starts stationary, always in the same place) - use all cooldowns + pop BL
/rw IF you have POISON debuff run to the Dreadscale tank to dispell it (or someone with fire debuff)
/rw IF you have FIRE debuff run to the Acidmaw tank to dispell it (or someone with poison debuff)
/rw Shaman(s) use Nature + Fire resistance totems pls

/rw === Icehowl ===
/rw Tank him in the center, raid spreads out in a circle around
/rw Icehowl will look at who he charges, avoid charge by running to the side (right)
/rw Spank boss while he is stunned, tanks drag to him to middle when he wakes up... Rinse + repeat
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Coliseum Lord Jaraxxus

/rw MT on Jaraxxus, OT on Adds

/rw CASTER DPS always kill the ADDS then when they are dead continue DPS on Boss
/rw MELEE DPS on Boss - Use interupts on FEL FIREBALL when you can
/rw Mage(s) spellsteal the Nether Power buff from the boss, dispellers dispel it only if there are no mage

/rw IF you get LEGION FLAMES debuff - just run to the wall in a straight line
/rw RANGED and HEALERS spread out to avoid chaining any damage from the adds
/rw Shamans use Fire Resistance totem pls
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Coliseum Faction Champions - Needs complete rewrite

/rw This is basically a bitch of a PVP fight in PVE gear, but if you have a {Medallion of the Horde} then use it

/rw === Main rules for whole fight ===
/rw 1) Be aware of your surroundings! act on it
/rw 2) Survival is of essence - IF YOU are FOCUSED then run escape, fear, freeze, gouge etc
/rw 3) Help neighbours in trouble, put down totems, fear, stun, hex , sheep etc and cleanse any sheeped people
/rw 4) Shammy(s) pls use PVP tots, eg Cleanse and Tremor, watch for them being destroyed

/rw Principle for fight

/rw NPC setups:
/rw 2 melee 2 Ranged 2 healers (ex rogue warrior, mage hunter, priest druid)
/rw 3 melee 1 ranged 2 healers (ex rogue warr dk, elem druid, paladin druid)

/rw Our setup:
/rw 2 healers
/rw 1 lockdown protwarrior alt rogue
/rw 3 cc rotation persons
/rw 4 dps on skull

/rw 3 melee is cc'ed by rotation cc'ers (melee dps is cc'ed firstly)

/rw NPC Priest/Holy Paladin is locked down by prot warrior

/rw 4 dps kill in this order:

/rw 1) Healer NPC with most instant heals (example druid, disc priest)
/rw 2) most "bursty meleedps NPC" (example warrior or rogue)
/rw 3) Second most bursty meleedps (example dk, melee shaman)
/rw 4) Second healer
/rw 5) ranged melee
/rw 6) ranged caster

General idea (this is not supposed to be texted, it's just for you to know what i'm trying to tell in the /rw messages):

3 cc keep all dps except 1 ranged dps (his effects will be healed or dispelled) This will hopefully make all our dps/helaers pretty safe from damage
1 lockdown person keeping an healer locked down makes the skulltarget recieve limited heals (calculate skull to get 100% of his health healed)
2 healers / dispellers should be enough
4 dps make 4x3500 dps on an target = 12-16 000 dps which would make an NPC with 800k (double NPC health) die in 50-70 seconds

whole fight should take about 6 minutes.

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Coliseum Twin Valkyrs

/rw Group 1 DPS on Darkbane
/rw Group 2 DPS on Lightbane

/rw To do DPS on Darkbane you need to have the LIGHT buff
/rw To do DPS on Lightbane you need to have the DARK buff

/rw When orbs appear, avoid LIGHT orbs when you have DARK buff and DARK orbs when you have LIGHT buff.
/rw Collecting ORBS of the same colour will give you a boost!

/rw Roughly every 45 seconds two random abilities will occur. EITHER Twin Pacts or LIGHT/DARK VORTEX.

/rw TWIN PACTS is a Powerful Heal. It will Heal the bosses 20%.
/rw Tactics on TWIN PACT are:
/rw 1) Make sure you have the right buff: Light buff to damage Darkbane and vice versa.
/rw 2) Blow all cooldowns to take down the protective Shield the boss have cast
/rw 3) Interupt him with whatever special abilities you class have

/rw LIGHT/DARK VORTEX is an AOE RAID KILLER.
/rw Tactics on LIGHT/DARK VORTEX are:
/rw 1) On LIGHT VORTEX run off and GET the LIGHT buff
/rw 2) On DARK VORTEX run off and GET the DARK buff
/rw 3) When the Vortex is over change back to the DARK/LIGHT buff needed for your group assignment

/rw Note that the twins have a shared health pool. Any damage done to one will be taken by both.

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Coliseum Anub'arak

/rw Fight has 3 phases
/rw Phase 1: Boss is ABOVE ground and elite ADDS appear
/rw Phase 2: Boss is BELOW ground. Raid is KITING SPIKES and killing non-elite ADDS.
/rw Phase 3: Starts at 30% HP - Tank and Spank time - Healers keep raid at 50% HP NO more - ONLY MT gets FULL HEAL

/rw Tactics Phase 1
/rw Phase 1: MT tank boss above ground OT tanks adds
/rw Phase 1: OT tanks adds ON Permafrost patches
/rw Phase 1: MELEE DPS stay on BOSS
/rw Phase 1: CASTER DPS burn down the ADDS OT is tanking THEN back on BOSS
/rw Phase 1: One caster DPS shoots down the Frost Orbs floating above to create Permafrost patches (will assign)

/rw Tactics Phase 2
/rw Phase 2: Survive the SPIKES by standing ON Permafrost and avoiding those being targetted
/rw Phase 2: Group up and AOE the non elite ADDS
/rw Phase 2: OT stay away from small ADDS poison debuff

/rw Tactics Phase3
/rw Phase 3: Starts at 30% HP - Tank and Spank time - Burn all CDs and pop BL
/rw Phase 3: Healers keep raid at 30-40% HP NO more - ONLY MT gets FULL HEAL

Where did I say split up?

We always tank both bosses around the centre of the room?