I love love love shredded beef in Mexican food. I've made it a couple of times before but I've never been able to make it as wonderful as it is in some of the B-Grade restaurants/shacks in San Diego. Fear not, my friends--for I have found a recipe that I made last night and it was so good (and sooooo easy with a little bit of planning). Searing a giant chuck roast at 8am is not my idea of a good time--and this is before I had my coffee!--but it was worth it in the end.
It makes a lot (I made it for 6 adults and we still had quite a bit of leftovers)--so would recommend making it for a large group or being prepared to eat tacos or some variation of tacos for a while after making the meat.