For each 1/4 pound of hamburger, mix with 2 Tbs of blue cheese dressing. Marinate 10 minutes or more. (More is better.) Grill. This is even more fabulous with ground turkey. (Regular ground turkey, not turkey breast.)
Also, take 1/4 lb. ground turkey burger, mix with 2 Tbs of ranch dressing, 1 tsp melted butter & 1 Tbs of grated parmesan cheese and S&P. Marinate 10 minutes or more.
These grill great on the George Forman grill too. They come out as exceptionally juicy, flavorful burgers. Yum!