One of our clients wanted to add his profile image next to each tweet so we had to manipulate the plugin a little.
1) Make a local copy of twitter-blogger.js
2) Updated the path to look for our local version of twitter-blogger.js in recent-tweets.php
3) Added "var profile_image = twitters[i].user.profile_image_url;" to twitter-blogger.js
4) and changed line 11 in twitter-blogger.js from:
Once that is done you should get a thumbnail of the users profile photo next to each tweet.