I specialise in finding the cheapest flights out there. I can do this by tracking glitches in airline systems - something that happens all the time if you know where and how to look.
Some example of past tickets I've booked as a result of airline errors: NYC-Hawaii $7; San Fransisco-New Zealand business class $1,500 (instead of $15,000); and just last week Zurich-Bangkok for $10.
If I can't find an error fare to suit your travel plans, I'll try my best to find the cheapest fare out there. Other tricks include removing the fuel-tax from your ticket price (sometimes 50%), or adding extra flights that you can cancel later.
I can also advise you on how to spend your frequent-flyer miles most efficiently - I assure you there is almost always a better way to use them. Often it is also possible to fly for the same cost as the value of the miles earned (e.g. I recently flew a 27,000 mile itinerary costing £270, which is roughly the value of those 27,000 air miles I just earned - essentially a free trip once I cash in those miles!)
You can give me your exact travel wishes, or to get the cheapest deals just give me rough dates and a general part of the world you'd like to see.