T-Mobile has a Blast
The Samsung Blast (SGH-T729) is T-Mobile's second cell phone with a SureType keyboard.

Despite the lack of high-end multimedia features, that's not a bad offering, yet its most noteworthy feature is the SureType keyboard taken straight from some members of the RIM BlackBerry family. The addition of the keyboard means that messaging and e-mail features are a focus of the Blast. Though I can't imagine that typing a long e-mail really counts as "having a blast," by any measure.
The SGH-T729 is the second Samsung phone after the