What is the most POWERFUL engine you have ever been behind?

GE CF6 aircraft engine on a Boeing 767, they make 59,000 lbs of thrust (should be about 30,000 hp each)...and there are two of them.

Haven't been on a Boeing 777 but those have engines that make 115,000 lbs of thrust...

I just flew back from a trip to France, flying from Denver to Frankfurt (and same for return trip) I was on a Boeing 787. Amazing aircraft, so much nicer inside than the older models and tons of room. Don't know the specs but I do know that's a gigantic heavy plane powered by only 2 turbofan engines so they have to have some insane thrust capability.