For my 4 shaman and 1 paladin I'm currently using:

#showtooltip
/castsequence reset=15 grounding totem, tremor totem, searing totem, mana spring totem

#showtooltip
/castsequence reset=15 grounding totem, searing totem, tremor totem, mana spring totem

#showtooltip
/castsequence reset=15 grounding totem, totem of wrath, stoneskin totem, mana spring totem

#showtooltip
/castsequence reset=15 wrath of air totem, flametongue totem, strength of earth totem, mana spring totem

And I'm using flametongue weapon on my Shaman for an extra dps boost. This is really untested. Norg went down shortly after I finished doing these and it looks like it's still down/down again this morning.