I want my next phone to be able to have different tones for different people, and use WoW’s “run away little girl” when my mother calls, “you not take candle” or “time is money, friend” for Financebro and “you are not prepared” or “keep your feet onna floor” for Middlebro, but for now I have Siniestro Total’s “Miña terra galega” live (their cover of Sweet Home Alabama) as the general ringtone and Sons of Maxwell doing “Tell my ma” as the alarm.
I want to have the Jeeves and Wooster theme as my ring but I am waaaay too un-computer-savvy to figure out how. So I have generitone. 
Go Into the Water - Dethklok
George Thorogood’s “Bad to the Bone”.
An 18 yo friend set that up for me. Before that it was the nostaliga ringtone like Agent 99’s in Get Smart.
A man after my own heart. 
Depends on who called. Rush - Bastille Day for most people, Rock Me Amadeaus for my husband, and people I don’t want to talk to get the Imperial Death March.
Default - “Viva Las Vegas”, Elvis.
Wife - “Sweet Child O’ Mine”, Guns N’ Roses
Mom & Dad - “Hold On, I’m Coming”, Sam & Dave
Brother & Sister - “I Won’t Back Down”, Tom Petty
My two best friends - “Bad, Bad Leroy Brown”, Jim Croce
Father-in-law - “Reach Out (I’ll Be There)”, the Four Tops
Work - “Rock and a Hard Place”, Rolling Stones
My reserve unit CO - “Dies Irae - Requiem in D Minor”, Mozart
My parents’ ringtone used to be Aram Khachaturian’s “Sabre Dance”, but things are much better between us these days.
For my brother - Rush YYZ
for my best friends L and T it is 3 little girls from the Mikado [we go for sushi a lot]
for mrAru recorded sound of General Quarters from a 688 sub
known spam - spam routine from Monty Python [the spam spam spam and eggs line]
known business contacts [insurance, phone, electric, cable companies] the kaching intro from Pink Floyds Money
London Calling by the Clash. Every now and again someone will hear the opening notes of the ringtone and crack up.
**
Ms. Attack** has Hanging on the Telephone.
Monty Python’s Galaxy Song, on my Samsung Galaxy S.
Except when my partner calls me. In the Christmas spirit, I’ve changed his personal ringtone to his favourite Christmas song - the UK’s 2009 Christmas #1.
My future-ex-son-in-law used this for his mother.
As for me, my phone just rings, on the rare occasions that I get a call. Mostly it just lives in the car. I rarely use it.
Super Mario Brothers theme as the main ring. When Lady Lacha calls, it’s “Dance of the Sugar Plum Fairy.”
The beginning of “The Wanting Comes in Waves” by the Decemberists.
I bet that makes an awesome ringtone.
Mine is a jaunty island rhythm that came with the phone. In the past, I’ve had Yakety Sax, the Office theme song, various AC/DC and Zeppelin songs, and Jizz in My Pants.
Joe
Anybody know how I could get the “foghorn” sound from the old “Addams Family” TV show? I always wanted that!
Mine is a duck quacking. It does not echo.
For phone calls: Miles Davis, “If I Were a Bell”
For text: one of the generic ones. I haven’t figured out a good, short, pithy musical licks for texts yet.
“Sentinel” the first track on Tubular Bells II. Nice because it starts off quiet, so I can answer it without jumping out of my chair.
Moved from MPSIMS to CS.