I'd really like to see Mezzmo pull ratings from IMDb and put that number on the card for each movie.
To make it even cooler, do a weighted average of the ratings from IMDb and Rotten Tomatoes.

Here's why:
When I sit down for my evening viewing, I'll start by looking (via Mezzmo) at what's in my "New Flix" folder.
I'd really like to see which of those 10 to 30 movies has the highest rating -- and that's what I'll most likely watch.
Granted, IMDb/RT ratings are highly fallible, especially when there aren't many reviews -- but it's better than nothing.

Yes, I can now get to the ratings number by clicking the IMDb link on each Mezzmo card, but that's tedious if you have more than a couple choices.