I think the Clapton album "461 Ocean Boulevard" also deserves a mention on this thread. It can be found in many formats, but the two that I know are good are the SACD and the high-def download from HDTracks.com.
The sound quality on this album is superb. Track 3, "Willie And The Hand Jive", in particular, has a fantastically wide dynamic range and will impress people if you put it on and crank it up.
Axiom M80s + QS8s + VP180 <-- Pioneer VSX-1120-K <-- Squeezebox Touch / XBox360 / Oppo BDP-93