Juice Zen, on Avenida Monseñor Rivero right next to the Banco Bisa (in Santa Cruz) has amazing cappucino ice cream, probably the best I've ever tasted! Really creamy with a strong coffee and cream flavor. They also have these little brownies they serve in plastic cups over which you put a scoop of ice cream in any flavor you want and they are really good brownies, very dark and moist and chocolatey - not like the pale, dry, flavorless "pseudo-brownies" they serve at Alexanders and other places. The brownies with cappuccino ice cream are awesome!
2012 Webmaster Update: This ice cream shop is no longer called Juice Zen. Someone bought it and changed the name. However, the new owners seem to have kept the Juice Zen menu.