It really is spectacular, isn't it? Most "so bad it's good" movies are really dull for about 75% of the movie. The Room never manages to reach that sort of mediocrity. It actually eclipses bad and winds up in some sort of bizarre cross-genre between David Lynch, the Coen Brothers and a Lifetime original movie.
My favorite moment is when a character we've never seen or been introduced to just walks in at the end of the movie and starts lecturing the main characters for no apparent reason. But who can really pick and choose? It's all fantastic.