[jQuery] How to create a nice looking autocomplete feature?

[jQuery] How to create a nice looking autocomplete feature?


Hi there!
I know there's a whole bunch of autocomplete modules out there, but I
must say that there aren't a lot of nice ones.
Facebook has one of the few, and it looks a whole lot like the one in
Apple Mail [1].
How would one go forward to make a nice looking, multiple input
autocomplete feature like the one in Apple Mail (or Facebook)?