Other than here, I've had gelato from across the street at The Mad Italian, Ice n'Cake at Shops at Don Mills, and La Paloma at Vaughan Mills. I would put Hollywood Gelato at the top because of flavour, range of options, and the price. Rocky Rocher is ALWAYS a flavour that you can't go wrong with.
Like some reviewers have posted, the service isn't the fastest nor is it the most organized but I'm not sitting there to have dinner.