What Is... Cliff Clavin?
| Image |  |
|---|---|
| Description | episode of Cheers |
| Author/s |
screenwriter: Dan O'Shannon director: Andy Ackerman |
| Publication date | January 18, 1990 |
| Language | |
| Country of origin | |
| Wikipedia link | https://en.wikipedia.org/wiki/What_Is..._Cliff_Clavin%3F |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |