This is one of the more creative and fun Facebook Connect implementations. Predators - a surprisingly good movie, promise! - launched a Facebook viral campaign in conjunction with their national launch two weeks ago (opened at #2). In theme with the movie, you are able to "blow up the heads" of your Facebook friends... Which also makes this the bloodiest Connect implementation (at least that I've seen). It lacks some polish but I give credit for the creativity:
Using your Facebook friend list, choose which friends are privileged enough to partake:
Then you have the option of sharing the results via the newsfeed and your friends wall.
The key to driving clicks through the feed are: visuals, catchy content and personalization. This has all of those... Wouldn't curiosity drive you to click the following post?