I never enjoyed the Blackberry-style keyboards, but I had an HTC Desire Z with a full slideout keyboard that I absolutely loved.
I took part of an exchange program to the USA in 2009.
I vividly remember buying an HTC Dream (the HTC Desire Z's predecessor), and having to some sort of hack to make it activate with a European SIM card.
Absolutely loved the tactile feel of the keyboard, and the very satisfying mechanical click that sounded when you opened up the keyboard.
Looks nice indeed: https://www.youtube.com/watch?v=4JZNtjYZaH8
I had one of these (although in the states it was called the G2. I also had the G1) and fully agree, best phone I ever had. It was also the only Android I had that survived longer than 3 years. Regrettably, I have since switched to an iPhone.