Does anybody remember the original Burger King?
yes, and he wasn't nearly as creepy as the new guy.
Can you reference other films you don't own the rights to in your screenplay without infringing trademarks or copyrights?
Yes, you can.The movie the Social Network relies heavily on referring to the trademark for Zuckerberg's company: How can a movie like The Social Network be legally written and filmed?Lots of movies and TV make pop culture references. How else can you make fun of Apple unless you refer to the company's name, which is trademarked. How can you make fun of Pulp Fiction without using characters, scenes or dialog from the movie.Trademarks only restrict use in connection with a product or a company name. Copyrights have an exception called Fair Use, which allows use of some (in very rare cases, all) of the original work for the purpose of commentary, including parody.In the example you list, this is clearly a commentary on Reservoir Dogs. It does not include any material from the original. The statement does not try to represent the work if is found in as the actual movie Reservoir Dogs, which would be a trademark infringement. (In fact, dialog in the movie that says "you are watching the movie Reservoir Dogs" probably wouldn't infringe anyway. You would have to actually title the movie with that label and do advertising with that label.)Thus, your example is just fine.