In her Integral House column, Lisa Rochon talked of avoiding the "pornography of an excessively undulating line". I agree with casaguy about the "infusion of whimsy" quality of curves - adding them as easy-sell eyecandy. I think it can mask lazy design and has become a cliche in condo design ( "sexy curves" ) especially. It obviously depends on how well it's done - the Round Room at the Carlu for instance, or the billowing glass front to the AGO's Galleria Italia unfolding against the sky as you walk along the north side of Dundas, or the subtle curve of the slatted wood screen in the City Room which echoes the proportions of the egg-shaped performance hall even before you enter it, being a few examples.