Alphadog,
Yes, they still make stovetop popcorn (and sell it in the same isle with the regular stuff)! In my opinion it tastes much better, and depending on what you drown it in, can be healthier, especially for a dog. You can also get way more creative with it - soy sauce, tabasco, italian seasoning, lemon pepper - the possibilities are endless! I make it in a large sauce pot with some veggie oil. Just be sure to shake it frequently or you end up with burned popcorn, a smelly house, and a dog running away from the smoke detector! And let it cool a bit before the dog gets any (this is the hardest part!)
Actually, popcorn was recommended by our obedience trainer as a way to help a dog learn to catch things. It really works! I know my mom snapped a pic of Kit jumping for popcorn last time she was in town, but I can't find it right now :-(
Sorry for hijacking!