I use a Foreman grill all the time and it's definitely not the same. I will say it's convenient though. I use it for boneless/skinless chicken breasts that I keep in the freezer. I never have to thaw them out. Straight from frozen to cooked on the Foreman grill in less than 10 minutes.
Loca, now I want pork and pineapple grilled on skewers. Yum. I love adding pinapple to stir fry/mongolian bbq as well.