1. Batcave It would be preposterous not to start this list with any concept other than The Batcave. And while there are a few very nice “Batcaves” out there, this one tops the competition. Merging Wayne Manor with The Batcave, this room gives you Batman’s awesome tech with all of Bruce Wayne’s refinement. There are twin seven-monitor (bat)computers, a 15-seat theater, a working fireplace and even a slide-away bookcase that leads to the Tumbler's garage/armory. Oh, and the suit's there too.

2. Zombie Apocalypse bunker Once believed to have belonged to Charlton Heston, this gun room is now thought to be the property of gun enthusiast Bruce E. Stern. Either way, this place is the ultimate zombie bunker. The room, as you can see, is stocked with all manner of weaponry — from rifles to flamethrowers to anti-aircraft guns. The door is like a bank vault's, steel six inches thick and locked by 7 bolts. There are also a pair of crappy old couches to sit on while you wait for the first wave of the undead.

3. Authentic Star Trek The first of our Star Trek caves makes the list because it's constructed from actual Trek sets. This cave’s owner was luck enough to win a few items in the official Star Trek auction back in 2006. The resulting small-ish movie room is outfitted with wall panels and LCARS displays from Star Trek: The Next Generation as well as Captain Archer's chair from Enterprise. The captain's chair has also been outfitted with a Trek-themed touchscreen remote. The room seats 5.

4. Star Wars This Death Star themed movie room lacks in the actual props of our Trek entry, but ups the ante in every other way. There is seating for 11, a pair of twinkling star fields and the doors slide silently open before you as you enter. Speaking of the entryway, just like the theater it is modeled after the gangplanks of the Death Star. Your doorman is a carbonite encased Han Solo and the usher is C-3P0.

5. Pirates of the Caribbean For those who prefer a life on the bounding main, this room is decked out with all the rigging and wooden planks your heart desires. While still a concept, it just begs to be completed. On the main deck there are a dozen plush captain's chairs for lounging before the big screen. Upstairs there's a poop deck bar, complete with ship's wheel.

6. Vintage movies If you want your movie room to hearken back to the golden age of the screen, then look no further. "Tut's Fever" is a replica of the grand-scale themed movie houses of the 1930s. Everything from the concession stand to the screen itself are themed after a vintage concept of Egyptian architecture. Giant frescoes and statues adorn the walls. The seats are modeled after Cleopatra's visage. There's even a hidden mummy in a casket smoking a cigarette.

7. Nautilus If Victoriana is more your thing, check out Captain Nemo's private screening room. There is seating for 11, decadent carpeting, a custom hatch housing the movie projector and even a dive suit if the need arises to abandon ship. There are also some very cool custom molded bronze squid details along the walls, and even a water-tight door that has the look of contact with salt water.

8. Star Trek: The Next Generation This Trek entry goes beyond just a theater room (though it does have one). Incorporating a very nice bar and a ready room, this cave is more like half a house. The shape of the theater and the design of the bar and ready room give me the impression of a Defiant-class vessel, but with more creature comforts. Could this be the never-seen interior of the Captain's Yacht from the Enterprise-D?

9. Death Star Bar Like something out of an Eddy Izzard routine, I give you the Death Star Canteen. Even Darth Vader and the troopers need a place to unwind, right? complete with a myriad of seating areas, a pool table and a lovingly painted mural of Emperor Palpatine this place is an uptight trooper's ideal escape. Sure the look of it is a bit austere, but too much frivolity might enrage the Dark Lord of the Sith.

10. Star Trek Voyager This man went full bore. His geek cave encompassed his entire studio apartment, and it was epic. Everything was made by the owner in the style of Star Trek: Voyager. The doorway was a transporter pad, LCARS interfaces covered the walls and the entire place was flooded with a soft blue glow. Sadly this was too much awesome for the owner's wife. She left him and got the apartment in the divorce — and then converted it out of spite.

11. The Hobbit Until now, England's geeks have been omitted from this list. An oversight I aim to rectify with the entry of The Hobbit. Yes, it's a Lord of the Rings pub, and it is a geeky one at that. There is an extensive list of themed cocktails and shots. Even Faramir and Wormtongue have signature drinks. Tom Bombadil hosts open mic nights, and if you drink all 10 fellowship cocktails you get a T-shirt (and a Nazgul cocktail). And don’t miss the Shire-inspired Beer Garden.

12. Steampunk Another full-home conversion is this Steampunk two storey home in Massachusetts. Every modern convenience, be it the electric oven or the 3-monitor computer is skinned head to toe in Victoriana. A vault in the living room hides the Blu-ray player and surround sound is pumped through old Victrola horns. Even the dog's food and water bowls are held in place by cast iron moldings. The whole place gives the feel of a Frank Lloyd Wright gone mad — in a very good way.

13. Steampunk Treehouse Initially crafted for the Burning Man festival, this metallic arboreal geek cave is now a permanent fixture at Dogfish Head Brewery in Milton, Delaware. There is a wing-flapping iron vulture, a precarious staircase leading to a Victorian study and even a steam-powered calliope. Though it is now a creative board room for the Dogfish Head folks, this unique space gets our honorable mention for its sheer sense of departure from everyday life.