A company named RipCode has an interesting solution to Apple's blocking of Flash on the iPad. Simply transcode Flash video to play right in Safari, much like you can stream various video codecs over your home network.
According to RipCode, their TransAct Transcoder V6 requires no special clients or modifications to host sites. Rather, RipCode will transcode simple Flash content like Hulu clips in the cloud to an iPad-friendly codec, providing a transparent fix to the Flash-less iPad.
(You could play YouTube clips straight from YouTube, for instance, without ever knowing the difference.)
Of course, two things need to happen for RipCode to be successful: Individual sites needs to adopt the technology (even if it requires no special site recoding), and Apple needs to turn a blind eye to the loophole (lest they seal it shut through a firmware update).