If you’ve got a burning desire to outdo everyone at your next family reunion, TripAdvisor’s TripWow may just be the slideshow for you.

TripWow’s free, and much more than your boring PowerPoint style slideshow. Admittedly, it’s pretty over the top, but you can create a flashy mashup of your travel photos online in just a few minutes, complete with maps and music.

The process is pretty simple. Go to TripWow, and choose your slideshow theme, photos and music. You can use your own music, if you prefer, and grab your photos from your computer, Picasa or Flickr.

Once your slideshow is done, you have the option to share on Facebook, by email, Twitter or MySpace (really? MySpace?).