I've just watched the latest episode of Entourage, and spotted an obsidian black colored Centro being used by Andrew Klein (played by Gary Cole). It's pretty rare to see a character in there flashes around their cell phones for a full blown-off scene like the one above, so yeah of course I immediately noticed it. ;-p
The other phones used in Entourage new episodes lately are mostly the popular ones: the BlackBerry Bold and the iPhone 3G. Although the super agent Ari Gold (played by Jeremy Piven) is no longer use Trēo™ 650, he now use the BB Bold, it's nice to know that one of Palm's smartphones is still used in there.