I dont have any wonder deals, but I do remember the 'double miles' deal AA ran after 9/11.. that netted me 29000 miles for each of my trips LGA-ORD-LHR-BRU (when I felt like the additional effort)

If I wasnt travelling in J, this could easily have been earned for $400 a pop

I'm far more interested in the cost for Q-Miles rather than total miles.. and the best deal I see so far for AA is :

$1060 JFK-NRT-SIN : 20000 Q miles
$50...Parking and gas
$0....Hotel
$10...Breakfast at Chani airport
Vacation days : 1.5 - About $300

Total door to door cost : $1420

Total miles incl. bonuses : 45000 this time 45000 next and 50000 the third

CPQM: $0.071
CPME: $0.0316

Now this may seem a little high until you compare it to a similar $600 fare with a 6 day minimum stay..

JFK-NRT-SIN ....: $600
Parking and Gas : $80
Lodging ........: $400
Food ...........: $80
Shopping : .....: $???? (WAY too much)
Taxi ...........: $40
Vacation days : 4 - About $800
total: $2000

CPQM : $0.10 (Assuming same bonuses)
CPME : $0.044

So to me the most efficient mileage run is actually available almost all year round.. 5 of these and I'll be EXP again..