With entire television programs and series devoted to BBQ, where to find it, how to cook it, and contests about it, it is easy to see why such a thread might get started.

BBQ is a VERY American deal, with regional variants that boggle the mind....and all good! (In one area in Tennessee, BBQ means goat!)
I have had BBQ in Texas, in Washington DC (where you must be careful!) and in Kansas (both in Wichita and at "http://www.arbbq.com", which I can tell without looking stands for Arthur Bryant's). I have also had my brother's from his custom-built smoker.

If one is reasonably careful, it is hard to find really bad BBQ. So, using foil? Sure....use whatever makes it good. Then try it another way next time......and call me.