I disagree about the date.
I don't think you should include the date for the follow reasons.
1) Is it extra information that will crowd the resume. There is no way I could do another column with the date.
2) Early in your career, it can hurt you . . . they can easily see you only have two to three years experience on your resume by looking at the dates.
3) It can be used to figure out your age (oh, he was in college in 1988, that makes him . . .) and can lead to age issues, which is a tricky legal issue.
If people are interested in when you worked at the company, they will ask.
If you list your stuff in chornological order, they will see you were asked back to a company.
I just think the year is NOT industry standard. What is important is that you did the show, where you did and who the director was.