On weekends the lines go out the door at this diminutive gelateria. But in the case of this franchise of an Italian operation, it's absolutely worth the wait, even if you can't snag one of its precious few seats. The gleaming, high-tech shop is sparklingly clean without being sterile (even the bathrooms are outfitted with what look like designer fixtures). The staff is outfitted in bright yellow overalls and matching bandanas, and they keep things moving along efficiently. As in Italy, you place your order and pay, then take your receipt to a server who scoops up an artfully shaped mountain of creamy delights from a rainbow-hued selection of flavors. If you opt for a cup instead of a cone, your gelato is topped off with a crisp cookie, a nice touch -- and tasty too. The single portion is already decadently large; the double should satisfy even the greediest -- or do duty as a perfect shared dessert to top off a date in the Grove. Bacio also serves one of the best espressos this side of Roma.