The smoked red jalapeño, known as the chipotle chile, has gained such popularity that there's even a couple of cookbooks devoted to it! It particularly works well with barbecuing and grilling, both of which have considerable smoke associated with them.
Here's a pickled chile recipe from Tlaxcala. These sweet-hot pickled chiles can be the basis of a sauce of their own if they're further puréed, or they can be served as a condiment with enchiladas and other main dishes.
Note that this recipe requires advance preparation.
Like most stews, this one takes a while to cook, about 4 hours. It is interesting because it contains a number of pre-Columbian ingredients, namely Chiltepins, corn, squash, potatoes, and tepary beans. The spicy heat can be adjusted by adding or subtracting Chiltepins.