Interesting how this thread has drifted from the prompting question, but understandable: if the definition of garam masala is radically different, then there's no standard and thus no meaningful response to "What foods do you use gm on?"
I buy pre-mixed garam masala from Penzeys ("Punjabi style") and it contains coriander, black pepper, cardamom, cinnamon, kalonji, caraway, cloves, ginger and nutmeg. I use it on lamb chops perhaps too frequently--but no surprise there. However, I threw a pinch in this past New Year's Hoppin' John and will definitely do so in 2010! So great with ham hocks.