Interesting - Attaching JQuery UI Datepicker
When attaching JQuery UI's datepicker you should not use the class hasDatepicker since JQuery UI uses this class to mark DOM objects that already have a datepicker attached. So it won't attach a datepicker to elements with that class.
Interesting - Solr score sort
It is possible to sort results in Solr using any criteria you want and use the Solr score for a secondary sort. Some people thought that you were only able to use the Solr score as your primary sorting criteria.