Resto shamans are amazing raid healers, with capacity to tank heal if no paladin are present in the raid, their totems bring great utility, and bloodlust/heroism. Usually since there are no enhancement or elemental shamans in the raid there is always at least one resto shaman per raid group.

Talents for Restoration Shaman Wotlk

Glyphs

Major

Glyph of Chain Heal

Glyph of Healing Wave

Glyph of Lesser Healing Wave

Minor

Glyph of Water Shield

Glyph of Renewed Life