If you do the quest series in Nagrand that takes you to the bar.
Link: http://wow.allakhazam.com/db/quest.html?wquest=10009

The one where you have to collect the debt from 3 diffrent npcs - Well don't turn in the quest, just keep asking the ogre at the bar for the debt and he will continue to respawn within 5-10sec of death and drop about 50 silver each time. He's really easy to solo and you get rested xp while you do it.

We eventually turned in the quest after killing him 50 times out of sheer boredom, but maybe someone can use this to a more sinister means. . . .

If that doesn't work and you need gold quick, I recommend The MMORPG Exchange WoW Gold. They deliver quickly and are cheap! I usually receive my gold within 20 minutes. They're my secret weapon, I highly recommend them!