It occurred to me yesterday while writing the post on speeding tickets and municipal court that it might not be a terrible idea to represent yourself in landlord-tenant court as well. Especially where it deals with the recovery of a security deposit, the law in New Jersey is extremely well-settled and there are a lot of resources on Google that should be able to help you along.
On the other hand, if you are going to be evicted and don't have another place to go, I can understand being hesitant to appear without an attorney, but financially you might have no alternative. The good news there is that by and large the law is pretty clear here as well and you can find out what to expect by just doing a little research.