I'm looking to plan a taco crawl down Roxboro St. I discussed it at a local Slow Food meeting and everyone seemed pretty into it. Thus far I've ID'd about 5 taquerias on the street, though I've only eaten at Super (the one with the pig cooking the guy in the window) and the one in the mexican grocery next to the post office. I've found both to be certainly worthy.
My thoughts were that each person could choose one type of taco and order it at every place on the strip. We could then share our thoughts on who made the best. Hopefully we'll have enough so that more than one person will be able to get each type.
At any rate, if you're into it, let me know and I'll try to nail down some dates.