Amazing. As long as you can get someone else to pay, I think this place is better than most of the other steakhouse chains I've been to (although Capital Grille still holds the gold medal in my book).
After overeating for the majority of my trip, I decided on the double filet mignon with lobster and scallops. It was the perfect size and wonderfully cooked. Sides were fantastic too -- lobster mac & cheese and potatoes au gratin were standouts. Crab cake was also heavenly. The only thing that slightly disappointed was the shrimp appetizer with three sauces... seemed a little too bland for my taste.
The service was amazing. We were with a group of eight and we ordered sides for the table. In most steakhouses they plop down the sides, but in Del Frisco they actually brought in three servers at once who SPOONED out the sides to everybody. Made things a lot less awkward at the table!
Finally, we capped off the night with a visit to the James Bond table. Definitely one of the best meals I've had to date.