Pros
Being an Accounting Clerk is a relatively easy job (in comparison with other more involved accounting positions). However, it is very mundane. It involves a lot of filing, sorting, copying, logging. You may also be required to get lunch for your department. There is a lot of opportunity for growth (if you stick with the same group of people from show to show) and most people are willing to show you how to work with the accounting software (most companies use EP Vista--not to be confused with the Microsoft OS). You get a pretty decent weekly rate, and, after logging in a certain number of hours at your position, you get health benefits! You get free lunch (at the expense of having no official lunch break). If you're considering a job that's a step up from the Production Assistant position and considering a career in Accounting, then this is a good entry-level spot for you.
Kontras
Being an Accounting Clerk is usually on a contract/term basis. You can be employed as a clerk with the parent company of the movie for whom you are working, or you can just work with the studio from show to show. As a result, your job status is relatively unstable. The hours are long. Depending on who your head accountant is, you can work from 50+ to 60+ a week. As a result, your weekly rate that seems awesome in comparison with the 40+ a week work is pretty average when you break it down to actual hours worked. As mentioned above, you get no real lunch break because your meal is bought for you by the production. Also, once you stop working in Accounting, your health benefits stop after your qualifying period. It's a long and tedious job. You will be a lot busier than a Production Assistant (though you will be making only slightly more). You may start to wonder how other people got their jobs because you'll discover how much other departments make and realize that they're less than competent...