I'm using both Isotope and Picturefill, and I'm 99% certain Picturefill is doing its magic after Isotope does its magic. As a result, Isotope is laying out my items according to height(s) that aren't accurate ... because Picturefill swoops in and adds those images afterward.
If I resize the viewport, Isotope runs again, and everything turns out as desired (because, BOOM, the Picturefill'ed images are already there). I just need this to work out perfectly on page-load as well.
How does a guy like me make sure Picturefill does 100% of its magic before Isotope does?