This is a very poorly represented field in wargames. When I say "pulp" most people think 1920s-40s Indiana Jones style adventures. In fact, for an area which is relatively niche in the mainstream media, classic 30s pulp is rather well represented in wargames.
I'm talking "modern pulp" - stuff set in today's world, but with supernatural, superhero, scientific or alternate-history twists.
Be it small special forces teams battling a insidious alien infiltrators (X-COM) or all-out invasion (Independence Day, Battle of Los Angeles) persecuted alien minorities (District 9) coexistence (Defiance) or exploring alien worlds through a Stargate - this has plenty of legs. The minis are already there, as well. The new Terminator game could fall into this category I guess, as might Transformers.
Supernatural/Horror - Monster Hunters
Although there are plenty of RPGs in this vein, a skirmish game featuring hunters of evil from shows like Buffy and Supernatural seems indicated - unknowing humanity needs to be protected from the darkness. Hellboy and RIPD blur the line between this and the superhero genre.
Werewolf vs Vampire
This supernatural subsection is a rather tired trope in media, but surprisingly they don't have 101 wargames made about them (*cough* sickofzombies*cough*). Underworld-style vampires wielding swords, shurikens and automatic weapons against werewolves has some appeal and would lend itself well to skirmish gaming. Vampire the Masquerade-esque warring vampire clans also appeal.
From books like Dresden Files, Gaiman's books, Lev Grossman's The Magicians, to the amazing Night Watch books and movies - there are magicians who live amongst us - fighting to maintain the balance between order and chaos, light and dark... or whatever.
This is the low-hanging fruit, but apart from Knight Model's Batman (not really a superhero game) and Pulp City there's no major contenders (I don't count Heroclix and SuperSystem and isn't tearing up any trees). Characters with a single power (from shows like Push and Heroes) or minor powers (Arrow, Flash) could be balanced reasonably effectively. And of course you could tap into the Avengers thing that's suddenly made comics cool, but I think balance with more powerful superheroes could be difficult. Superheroes are the new zombies, and I'm surprised more people aren't trying to ride the wave.
Trapped in a Videogame
The Matrix is just begging to be made a skirmish game, and Tron also has potential. The Tad Williams Otherworld series shows the flexibility of this genre: how you can change settings from ancient history to modern at the flick of a... circuit?
Only kidding. This is the most ****ing overused road of all. Please, no more, I beg of you.
Hand me the stick, the horse is still moving...
I think I've made similar comments before - but it still surprises me how poorly this area is explored in wargames, for the major place it has in popular culture. Superheroes are now cool with teenage girls and comic heroes have moved from the closet nerds and collectors to mainstream. "Modern magic" or "Supernatural" is the biggest fiction section in most bookstores. We've a long tradition of alien invasion movies.
When is wargaming going to catch up?