Dennis Waterman is a character in Little Britain. He has been caricatured by David Walliams in the radio and TV comedy series Little Britain , in sketches where he visits his uncle Jeremy Rent (played by Matt Lucas) looking for parts. Most of the jokes in these sketches are about Waterman being extremely small, making common objects massive in comparison to him, but the real Dennis Waterman was of average height at five foot two. The caricature is offered but always declines respectable parts because he is not allowed to star in, or "write the theme tune, sing the theme tune" (pronounced as "write da feem toon, sing da fee toon") of, the particular production. This joke is because Waterman sang, and is believed to have written many of the themes for, at least four programmes he starred in. Waterman sang the title tunes for New Tricks, On the Up and Stay Lucky.
Waterman was initially bemused by the caricature. In November 2009, Waterman made a guest appearance in Little Britain Live, alongside the comedy character version of himself. He proclaimed he was angry at the characterization of himself, but was forced to admit that he did write and sing theme tunes for multiple programmes.

Dennis Waterman compared to a can of pop.