on my iPhone! I really couldn't care if I didn't have it on my Mac either. Flash based websites are a pain with those 0-100% "loading" bars and pointless, download-heavy graphics.
Then I remembered that I have a couple of Flash-based slide shows generated by Lightroom (also an Adobe product) so I'm going to have to do something about that!
Detractors of the iPhone love to bring up the lack of Flash. I am quite happy not to have it and I am not alone. Meantime, web developers should seriously consider providing a Flash-less alternative to their Flash-heavy sites.