Three stand-alone episodes and one expansion pack were released in the series from April 2005 to August 2007.

It will also be a stand-alone episode, out of sequence in the show's storyline.

"The old show had stand-alone episodes that rarely had any connection to each other," he said.

Most series in early television consisted of stand-alone episodes without continuing story arcs, so there was little reason to provide closure at its end.

The slice of life stories only have very mild continuity between them, and can be taken as stand-alone episodes.

Soon the decision was made to switch to stand-alone episodes.

The two are stand-alone episodes that were not originally designed to be shown together.

An exception to the usual format of stand-alone episodes came with the fourteenth series, broadcast in 2002.

Each of the five seasons featured a main story arc, as well as many stand-alone episodes.

The series is primarily a comedy series with stand-alone episodes.