1-800-I Don't Know
First of all, let me say I love my Blackberry. I have found that when you are a small business, it is vital to be able to check and respond to your e-mail from the road, lest people think you fell off the face of the earth.
But, those of you with a QWERTY keyboard, have you noticed that the number pad doesn't have the corresponding letters as does a regular phone? Which makes it very tricky when a business notes their phone number as 1-800-I Fly SWA or 1-800-Get A Mac
Try to find the letter that corresponds to the letters! You either have to do it from memory (remember that the letters start on the 2 key and the 7 key has four letters), or you have to find a regular phone and look at the keypad!
Marketers remember to always put the actual number along with the catchy phrase!