I just returned from a business trip to the East Coast, adding another 6,212 miles to my Delta SkyMiles. This has been a good year for my frequent fly miles. I'm now at 37,580 miles on Delta and qualify for Silver Medallion benefits. I didn't realize this until I was automatically upgraded to 1st class and also did not have to pay the $50 charge for an overweight bag.
I fly back to the East Coast in a week for an 8 day trip, adding another 6K miles to my Delta SkyMiles (and hopefully another complimentary upgrade to 1st class). Two weeks after that, I fly to Europe on Delta for another large chunk of frequent flyer miles.
I'm working towards a couple of free (frequent flyer miles) tickets to Hawaii for my wife and I.