I saw this recently on both Dave Wilson's blog (http://blog.webartz.net)/, and then again on Todd Landry's blog (http://www.toddlandryphotography.com/blog/), and just had to try it. BTW, if you have not seen their photography, go check it out as they are both highly talented, in addition to being nice guys!
It's fun! Pummelvision synchs with your Flickr photostream and generates a super-fast video stream of your shots set to music. For me, it is 623 photos in 1:39. Why not try it, when it's fast, free and fun?
It's a fun way to stroll down memory lane, as well as giving you an interesting perspective on how your photography has evolved over time.