JEvents features a tool to edit the layout of the event detail page, event list pages and the monthly calendar cell/tooltips (JEvents 2.0+ only) . This video gives a quick demonstration of this in action for the event detail page. NB when editing the monthly calendar cell or tooltips it is essential that you disable the WYSIWYG editor.
JEvents View Switcher
Event Attendance Demo
This video shows a demonstration of the advanced event attendance plugin available to gold club members.
For simpler version available to silver members see this video.