Talk about an interactive ad---to help celebrate the NYC Maraton, -ASICS, the shoe company, installed a display at NYC's Columbus Circle subway  that allows you to race against a video image of marathon runner Ryan Hill.  Towards the end of this youtube clip, Ryan Hall races against himself--and it looks as if he comes off pretty well, even when he's not dressed for the run.

According to AdWeekly, Asics provided a 60-foot video wall "... and challenged passersby to race against top U.S. marathoner Ryan Hall. Of course, few people could keep up with his 6-foot-10 stride length and 4:46 mile pace, even for 60 feet. (He chugs along like that for 26.2 miles.)"