Where can I watch movies online for free?

READ!!!! Websites with movies that are FULL-LENGTH, has movies that date back to say 1990 (not just new ones), can watch more than 72 minutes, no ads (but im ok if its like a 30 sec ad at the beginning), no quizzes, and ESPECIALLY NO SIGN-UP REQUIRED!!! I don't have a credit card or debit and frankly I'm never going to get a credit card because I dont believe in spending money that I don't have. These are essential. I'm tired of sites that keep giving me these, especially the last one. If you're going to offer sites, please make sure that you've actually BEEN to the site and dont just give me a huge list that you've never tried before. Those aren't helpful, just time-consuming. I'm sorry if this seems harsh, but i've been wasting so much time on this crap. So please, if you have any HELPFUL sites, comment.