The new arcade units do have HDMI ports on them. That used to be an elite exclusive feature, but now they all have it.

Wow, I didn't realize the slim couldn't use Linux. There is one more cool feature that Sony has unceremoniously dumped in an attempt to reduce the price of their system (one of the others having been backwards compatibility, which was done away with early on). Since its launch it has been like a ship jettisoning its cargo. Kind of sucks that the PS3 gets lamer as time goes on.