What a cool plugin. Fully awesome typeahead in ~25 lines.

twittertypeahead.js

$('#school .typeahead').typeahead({
  	name: 'schools',
		prefetch: {
			url: '/schoolsforstate/'+ state
			filter: (data)->
				$.each data, ()->
					datumAdd = {
						value: this.school_name
						id: this.id
						tokens:[ 
							this.city
							this.school_name
						]
						name: this.school_name
						city: this.city
					}
					datum.push datumAdd
				return datum
			}
		template: [
			'<p class="school-name">{{name}}</p>',
			'<p class="school-city">{{city}}</p>',
			].join(''),
		engine: Hogan 
	})