The beginning of the opening title sequence may play a slightly different opening sound depending upon the nature of the episode. For example, an episode where the Hills go to Mexico plays a distinctly Mexican guitar riff at the beginning, whereas the 100th episode had a bell ringing and a hooting sound on top of the other "normal" instrumentation.
In the opening credits, the "Created by Mike Judge and Greg Daniels" credit is shown on the side of a garbage bag that the Hills are throwing out.
In the episodes that were originally broadcast in HD, the episodes were clearly drawn with a widescreen presentation in mind. However, during the credits, the Deedle-Dee Productions "American Flag" credit screen is clearly cropped, with some text nearly being cut off as a result.
The music that plays over the closing credits can vary depending upon the nature of the episode.