Molten Core
Lucifron - Magmadar - Gehennas - Garr - Geddon - Shazzrah - Golemagg - Sulfuron - Majordomo - Ragnaros
Baron Geddon
Baron Geddon is one of the most fun fights in Molten Core. He shouldn't be too hard as long as you're organized.
Baron Geddon Abilities
Baron will stop moving or attack frequently and do an AoE fire damage spell which does damage every second for around 10 seconds. The damage increases every second so unless your tank has a lot of FR have them move out of range.
This is a manaburning DoT and removes 400 mana and deals 400 damage per tick. This needs to be dispelled off of all of the healer's but classes without mana won't take damage.
This is a debuff that Baron sticks on people every once in a while which when it goes off does 2000+ damage in a large AoE and throws the person with it on way up in the air. Have anyone who gets this run away from the raid immediately.
The Pull
Have a hunter pull Baron geddon back into Garr's room.
(Click to Enlarge)
Have everyone form a line like in the picture and have the main tank directly in the middle of the room.
When Baron is pulled everyone will have to be ready to run to the blow-up spot if they are hit with the bomb.
If everyone is qucik enough with the bomb this should turn out to be a easy fight.