An interesting ice cream and coffee shop which features tasty ice cream and environmental friendliness. This may be the only establishment I've ever been to which offers the option to wash and reuse plastic utensils.
The mix-in choices are somewhat overwhelming since there are so many, but they have some excellent options such as bacon and soylent green! Seriously though, some of the ingredients are actually good.
Instead of placing the mix-ins on top of your ice cream or mixing them in on a cold stone, Oh Yeah! has a strange machine which turns hard ice cream into softserve and mixes the extra ingredients in.
Somewhat pricey, but definitely worth trying out.