Telephone extension numbers in Contacts
If a contact has an extension on their phone contact record iPhone does not parse out the extension when dialing the number. Hence the call doesn't go through, and because iPhone can't copy and paste I'm forced to write the number down and dial it manually. This is a big problem as many of my contacts have extensions and I don't want to delete those in order to make calls.
My Blackberry had a nifty feature of recognizing an extension number and then prompting me to dial the extension after the call was connected. It would be great to see this feature added to iPhone.
Mac Pro 3.0ghz/2.0 GB RAM/512MB x1900XT, Mac OS X (10.4.10)