Real World Example: I'm working on a financial projects tracking site that has 50+ fields. To organize the UI better and make the forms more user-friendly, I tried to implement show and hide based on the difference of start and end dates of a project.
For instance, a project has start date May 2010 and end date of 2015. The difference of those two is 5. Thus jquery should show only 5 fields (out of 8 max): Award Amount Year 1, Award Amount Year 2 ... etc.
Though it doesn't have to be in conjunction with jquery,what other methods are out there to make SP list forms easier for end users? I would like to not show all the fields as it creates UI redundancy and confusion.