Here are some useful (as in really raid buff style useful) buffs given by sayge in the darkmoon faire!
http://www.wowhead.com/spell=23766 - Holy - Int
1.Let the man go and have the corn.
2.Take the credit and keep the gold.
http://www.wowhead.com/spell=23735 - Retribution - Strength
1. Confiscate the corn.
2. Let your brother in.
http://www.wowhead.com/spell=23737 - Protection - Stamina
1. Confiscate the corn.
2. Speak against your brother freely.
http://www.wowhead.com/spell=23767 - Protection - Armor
1. Let the man go.
2. Give the man gold and credit.
Those are what I can get from the community and my own fortunes, as you can see this buffs are pretty useful if you're into min maxing and last two hours!