Ever want to just post a slide show of your family or your latest adventure.  PhotoSnack makes creating an embedable slide show a 2 minute process.  The free version allows you up to create albums totalling 250M in a variety of themes.  The pay version removes the rather unobrusive watermark and gives you up to 5G of storage.

One of the best features is scalability.  You can size the show for your facebook stream:

or for a full size blog post:

This is a very simple tool, and I think the results look great!