Nokia announced the Nokia 5500 Sport mobile phone.

The Nokia 5500 Sport features a single button to activate three different modes to correspond with your current activity: sport mode, music mode, hang loose mode.

Text-to-Speech technology reads you your incoming SMS to you will you jog around Big Apple's Central Park.
The 5500 is of course featuring an MP3 Player with up to 1GB microSD card storage.
Nokia also added pedometer that keeps track of your distance walked or calories burnt.
For extra durability, the Nokia 5500 Sport features an ergonomic stainless steel casing, complemented by a splash and dust resistant shell and rubber grips.

The triband Nokia 5500 Sport (GSM 900/1800/1900) is scheduled to sprint into stores during the summer (3rd quarter) of 2006 and is expected to retail for around 300 EUR.
More details in this Nokia press-release.