If you were a fan of the Blackberry keyboard, you can now get it for your iPhone:
Clicks Keyboard for iPhone 16
Clicks Keyboard for iPhone 16
I was a fan of the Ericsson keyboard
chernysh: I loved the Sony Ericsson keyboards that they came out with... I had all the attachments 
even the crappy camera
even the crappy camera
anubisdarkwatch: the best Sony Ericsson phone for me was this one, with built-in detachable qwerty keyboard and tons of everything else
When Phones Were Fun: Sony Ericsson P910 (2004)
When Phones Were Fun: Sony Ericsson P910 (2004) 
I had the P900 and I thought I was the SHIT!
I still might have it somewhere 