I use the ringtone heard in Crank. I haven't been able to find a Doctor Who ringtone I like (yet).

Through The Fire and Flames intro.... it's a love/hate thing. :)

I have a standard old fashioned proper ringing type tone.

I've been looking for the Metal Gear Solid codec ringtone lately.

I use the factory preset ringtone.

I hate people who have annoying ringtones and I want to smack them in the face.