I recently came across this great JavaScript library called TextboxList by Guillermo Rauch which will convert good old input fields into Facebook like input fields.

Even though there are tons of JavaScript libraries out there, it is very hard to find one with sufficient documentations and good overall quality. TextboxList definitely surprised me with not only its quality but the flexibility to be customized in order to fit different needs. There are MooTools version and jQuery version, and it supports both preloaded data and on-demand AJAX for auto-completion.

If you are looking for a way to jazz up your page, this is a must-try!