Sentence:  We all know how genius “Kamp Krusty,” “A Streetcar Named Marge,” “Homer The Heretic,” “Itchy & Scratchy: The Movie” and “Mr. Plow” are, but even the relatively unheralded episodes offer <WSD>wall-to-wall</WSD> laughs. 
Meaning of the word marked with <WSD> tags:  Pervasive, ubiquitous, or unremitting.