As Drupal experts we get used to Drupal, and it's short-comings. One of the worst UX issues with Drupal is date and time functions when creating content for your website.
How many people want to TYPE dates and times into small anonymous input boxes? Sure, it's not that big a deal when you fill out the fields for creating one or two test nodes on your Drupal site. But what if that was YOUR job? Yeah, why not just shoot me in the head right now!