My favorite, Hot Link (beef with 4 kinds of peppers) grilled, in grilled crunchy sesame buns. Fresh onions.
(People rave about the fact that they serve RC cola, never tried it)
Other popular dogs:
Bockwurst (1/2 veal, 1/2 polk, milk, eggs )
Calabrese (all pork fennel, paprika, cayenne )
Bird Dog ( turkey, cilantro, lo fat )
The Wienie ( veggie dog, wheat gluten soy protein )
Pick up some chilli as well, and a large lemonade.