If you're looking for a pulp apocalypse novel series then Jerry Ahern's "Survivalist" series might be an option. I'm loathe to recommend it since there are a range of weaknesses but as brain candy goes it works fairly well. Mind you, I'm looking at this issue from the point of view of a teenage recovering from a week at Pwllehli Butlins with my family and grandmother so ...
It is jingoistic to say the least. Misogynistic might also be applicable. All said though it requires little in the way of thought or engagement. For all that though there is something compelling about the series.
Also ... Brin's "The Postman" is a far better novel than the film. "O-zone" is reasonable. Philip K Dick's "Penutlimate Truth" works well. I've a soft spot for "Trinity's Child" by Prochnau, filmed as "By Dawn's Early Light" and does a pretty good job.
Christopher's "Death of Grass" is quite a brutal variant to the normal 'cosy catastrophe' of Wyndham. If we're straying into this territory though I would also add in Hoyle's "Black Cloud".
Dated as it, I'd also have to include Wells' "Shape of Things to Come". The 'history' (novel is probably the wrong word) of coming generations makes for uncomfortable reading. Mind you, much of his output is challenging from the point of view of modern sensibilities.
Why-oh-why have I or anybody else not mentioned "Canticle for Leobowitz"? That has to be there for sure. Leaving aside pulp sensibilities there are so many other dimensions to it. Not least it's reference in later episodes of Babylon 5.
Heinlein's "Farnham's Freehold" expores this territory although you may want to exercise caution regarding some of the sensibilities expressed therein.
Oh, and of course we have to include the prog's own "Strontium Dog" ...
