My mobile rang during the middle of a Life Drawing class, and I had the unfortunate experience of being ridiculed by my teacher for having "such an embarrassing' ring tone. That being the original Theme song to the Mighty Morphin Power Rangers.

I still maintain and don't understand why that ring tone would be uncool :P as far as I'm concerned, it's old school awesome.

So I ask, What is YOUR geeky ringtone?

Other ones I currently have right now are:

Rick Ashley's Never Going to Give You Up (I'm rickrolling the world, one sms at a time)
Survivor's Eye of the Tiger (..this is the ultimate 80s monologue song)
Portal's Still Alive (in both the japanese and english version)
Indiana Jones Theme song - (because.)
Final Countdown! - in a rather Arrested Development moment

My phone is ancient. So ancient that I can't have an mp3 ringtone. Or even a polyphonic one. Perhaps I need a new phone... At the moment I have Toccata and Fugue, Bach. In monophonic, NES-style beeps, of course.

But if I DID have a custom ringtone, it'd probably be something from Final Fantasy. A boss theme, perhaps.

I tend to use Ace of Spades... but I have monty python songs on my mobile and they're calling to me...

Ahaha, Imperial March. Good on you, Mobius.

My cell phone rings to the battle music from Chrono Trigger. I challenge anyone to out-nerd that. As backup I have the theme from King of Bandit Jing (anime).

On my phone it starts with minor gunfire then you hear "BOOM HEADSHOT" its great as people worry about the gunfire as it sounds like its in the distance

Riot by three days grace,

except for my closer friends who i have given a personal tune of the sephiroth theme song from the movie final fantasy seven advent children.

My ringtone is the TARDIS.

mine's the muppet show theme, although whenever it goes off i usually end up spending the next 20 minutes on bluetooth sending it to everyone else...

a friend of mine had the imperial march as his, til it went off in our a-level chemistry exam & he had to walk up in front of 100s of people & pick his phone up from the front of the room.

then he changed it to the "uncle f@#*er" song from south park the movie, just in case it happened again...

I also sometimes use "Yakety Sax" (Benny Hill chase theme) and "America, Fuck Yeah!" from Team America.

Right now mine is "Safety Dance" by Men Without Hats.

At the moment mine is the Ace Rimmer theme form Red Dwarf, though I did have "Dearly Beloved", the Kingdom Hearts menu piano music.
I also have the Kirk vs Spock fight music, the theme from Predator and a bit of Dethklok lined up waiting.

My text alert (along with many of my friends) is the Fanfare from the end of an FFVII fight.

mine is a dalek saying "exterminate annihilate destroy"

Mine right now is the Final Fantasy Victory Theme. I might change it to Mach Rider though.

I'd have a good ring tone, but I don't know how to put them on my phone. -_-

My friend has C3P-O saying 'Sir, the chances of sucessfully navigating an asteroid field are precisely 38,095,685 to 1!!' Which is pretty cool. In a nerdy way.

I'd probably have mine play I am The Walrus though.
NO! Forget that, Revolution 9.

My ringtones are.

Anyone: Excitable (The Orgasmic Mix) - Def leppard
Family: Pour Some Sugar On Me (Hysteria Version) - Def Leppard
Text: Sonic 2 - Extra Life.

I've got the noise the Book makes from The Hitch-hiker's Guide to the Galaxy Radio Series. It's a great way to connect with similarly minded geeks in a crowd and your phone goes off...

My dad has the ASDIC (sonar) ping which is fairly geeky as well, but also cool.

club foot-Kasabain--because its f***ing awsome
oh canada-because canada rocks
that one rooster ringtone-becasue it annoys the hell out of people and sometimes thats just fun

My phone cant even hold any songs so I just have the ding al ling al ling thing.

Normally I don't indulge threads like this, but oh what the hell?

My ringtone is the Metal Gear Solid Codec, which I captured from a PSX emulator (as I wasn't about to go hooking up my PSX to my PC somehow and buy an expensive audio card) and then sent it to my cell via e-mail.

Why would I do this? Simple; when amongst a bunch of nerds, the coolest thing you can do is whip out your cell when someone calls you and say, "Colonel, can you hear me?"

JENOVA for my mother (lame, I know) and One Winged Angel for everyone else 9_9

I also forgot, I used to use the Trogdor song from homestar runner

my ring tone is the excorsist theme tune, tubular bells.
sometimes paranoid by black sabbath.

The Tardis dematerialising, with the Empy Child's "Are you my mummy?" for message alert.

To date, my favourite belongs to a friend of mine, who uses some sound effects from Metal Gear Solid.

Specifically, the "ringing" noise of Snake's communicator for a ringtone, and the "!" sound for an SMS.

I've never been interested enough to want to upload custom content to my phone.

Na-naaaaa, na-na-na-na-na naa naa naa na Katamari Damashiiiiiii!

crazy frog, funeral music , and the pikachu techno song and for my alarm i have a screaching monkey

My ringtone is the highway chase theme from FFVII. I had the MIDI version from the soundtrack so i was able to upload it to my phone.

I don't know whether it's actually geeky (probably more pretentious), but mine's 'Gran Vals' by Fransisco Tarrega (on classical guitar). A prize if you get the 'joke'.

The ring when Snake gets a call on his phone
every time it rings
i kneel down
like snake when he answers his call

and also the bass intro to the song "Lounge Act" by Nirvana

The Ballad of Black Mesa, by LitFuse Films. If I had a celly. So long, suckers! (Runs away cackling about roaming fees or something)