Have you ever noticed that whenever they mention a phone number in movies or TV the number starts with 555? According Wikipedia many 555 numbers are reserved specifically for this purpose.

Here is a site dedicated to collecting the 555 phone numbers of different TV and movies characters. It is “mind-numbingly comprehensive”.

Here are some examples:

• Frasier’s Radio Show:  555-KACL
• Ghostbusters: 555-2020
• Jerry Seinfeld: 555-2390
• Homer Simpson (work): 555-7334