12 great sci-fi moments from The Big Bang Theory

The most entertaining sci-fi ensemble on TV today isn't to be found on Lost or Heroes, but rather on The Big Bang Theory, with its four geniuses who love sci-fi TV, movies, comics and games as much as we do, and the beautiful next-door neighbor who learns to love them. (Well, one of them, anyway.)

And yes, The Big Bang Theory IS a sci-fi show. As the fantastic four plus one play Klingon Boggle and wrangle over the problems with teleportation, you never know when there'll be a guest appearances by a soapy Katee Sackhoff, the DNA of Leonard Nimoy or the time machine from George Pal's 1960 movie.

Check out a dozen of our favorite moments below.

Klingon Boggle

Can Howard Wolowitz convince the gang that kreplach is Klingon? We didn't think so.

Spock's Conception

Howard learns that new Star Trek film will feature Spock's birth, but Raj is more interested in what had to have come first.

Rock, Paper, Scissors, Lizard, Spock

Sheldon is going to let George Lucas disappoint him in the order he intended.

A Time-Share Time Machine

When Leonard bids on a classic piece of sci-fi movie memorabilia, things don't go exactly as he planned.

Howard's Katee Sackhoff Fantasy

Howard wants to play Cylon and colonist with Starbuck, but his fantasy isn't cooperating ...

The Problem With Teleportation

Why Sheldon refuses to be teleported. Makes sense to us!

Terminator Theory

Now we understand what was really wrong with The Sarah Connor Chronicles.

The Sword of Azaroth

The gang gets together for a night of gaming, and Raj spices his meat with goblin blood ... until there's a traitor in their midst.

The Hamburger Postulate

The Battle of Gettysburg is refought with orcs, Superman, the Hulk ... and Godzilla.

Halo 3

The Halo 3 champion turns out to be ... Penny?

It's a Trap!

Sheldon channels Adm. Ackbar from Return of the Jedi, only it doesn't really work without the giant squid head.

Leonard Nimoy

Sheldon gets the best Christmas present ever—Leonard Nimoy's DNA!

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