Simple Facebook Connect really lives up to its name. It really is simple, and it implements Facebook Connect nicely. Other words missing in its title are perhaps, comprehensive, and awesome, as despite being simple to set up, it comprehensively captures all the features that Facebook connect offers (and even beyond, by pulling comments FROM facebook TO your wordpress site!), and in this way its awesome!!
The plugin also scores bonus karma by keeping it clean, without any logos of, or link-backs to its creator, like other similar plugins.
It doesn't get any better :D