In a saucepan, over medium heat, melt the butter. Add the onions and saute for 2 minutes. Season with salt and pepper. Add the corn and saute 10 to 12 minutes. Stir in the garlic, jalapenos, cheese and cream. Cook for 3 to 5 minutes or until thickened. Season with salt and pepper, to taste. Sprinkle tomatoes and cilantro over top and serve with tortilla chips.