Your Go to CD to Impress

I once made a mix CD for my wife which turned out to have some great tracks for auditioning speakers.  Some of the better ones:

Sweet Dreams--Patsy Cline (amazing arrangement/production)
Here in the Dark--Taj Mahal
Save the Last Dance for Me--Aaron Neville
I Dream of Jeannie/Danny Boy--Joan Baez (great one for voice repro)

  Dire Straits Communique  is a good one.
  The Eagles Hotel  California
   Pink Floyd Wish You Were Here

Depends entirely on the genre of music that appeals to the skeptic / news listener.

if it's pop or classic rock then it's Dire Straits -- Brothers in Arms -- BUT especially the XRCD pressing. 

If I can't get a specific song, artist or genre, I like to ask whether they want to hear something they may of heard before or something that they've probably never heard before. Surprise me could get you the Kamikaze Ground Crew, Danny Gatton, or maybe the Amazos. 

All- excellent suggestions- add;
Jamie Cullum- Twentysomething (2004) Verve (CD or SACD)
Stone Temple Pilots- Core (CD or DVD-Audio)
Nirvana- Unplugged, Live in NY (CD)
Pearl Jam- Ten  (CD)