Wow! So many memories! So many choices (35)! How do you decide??

The possibilities range from campy fun some by great composers (“Lost In Space” by ‘Johnny’ Williams, and “Tales From The Crypt” by Danny Elfman), to the self-consciously dramatic (“Space: 1999”). There’s also the oddly included. (“Get Smart” as science fiction? Why not just include “The Simpsons”?)

Some omissions were a disappointment. The “Twilight Theme” you can vote for is the Marius Constant version (arguably the best known), rather than the Bernard Herrmann version used for the first two seasons. The latter, imho, is musically much superior and rather creepier, but alas, not a voting option.

Based on the voting results (which you see after you cast your own), the voters were mostly youthful; more recent themes did better, suggesting that living memory and sentimental attachment made a difference in the outcome.

There were several to which I found myself strongly drawn , but with the vote limited to only four, I had to make some hard choices.

Ultimately, I found a simple guide: I voted my goosebumps. For those who are curious, but don’t want to be influenced by my choices, I’ll post them as a SPOILER ALERT here in white font. You can see them by highlighting the gap just below.

Battlestar Galactica (old), Battlestar Galactica (new), Dr. Who (Tom Baker era), Stargate: Atlantis (a surprise to me, since I never loved the show).

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Welcome to the first io9 music smackdown! We’re putting together the ultimate science fiction (and fantasy) playlist — all the music that everyone should have on his or her iPod.

Today, help us decide which theme tunes absolutely must be in the mix. Which would you rather have in your ultimate science fiction playlist: the theme from Firefly or BSG?

Here are the rules for this particular playlist. Only original TV theme songs are eligible (so Chuck’s Cake tune and True Blood’s “Bad Things” are out, but just for this round). There are no cartoons for this round as well, you’ll get your TMNT cartoon theme song smack down soon enough. You can vote for 4 total. The winners will be added to io9’s ultimate play list. The poll is at the bottom of the posts, and we’ve included every single song on the list so you can decide first-hand.

Remember: you can vote for up to four items.

Click here to hear the candidates and vote ==> Vote for the greatest science fiction theme song of all time