The course catalog looks very much like Coursera's, which isn't bad.

The UI for a specific class, the unlabeled boxes above the videos to display progress, is horrible though. The list to the right side of the video was far clearer. Each unit of a course is accessed via a drop down now, as opposed to the collapsible list that used to be to the right of the videos.

Also, they seem to have lost all their orange.