Ditto, FOAnatic about the revival Cabaret. Mmmmmm leopard print carpeting...oh, sorry, we're talking recordings, aren't we

(Sorry, when I think Cabaret I think of the leopard print carpeting in the refurbished Studio 54. I know Emcee knows what I'm talkin' about

)
Also:
Jane Eyre (especially if you get a hold of the revival Assassins recording--both have the wonderful James Barbour

)
If you don't mind Gershwin, the recording of Crazy For You is nice :) (I'm really struggling to contribute something worthwhile, in that most of the answers I usually think of are already mentioned :P)
Fiddler on the Roof--I haven't heard the revival, but hearing Zero Mostel do "If I Were a Rich Man" is a must.
Q: What is the most weirdest or funniest thing a fan has asked you?
Joe Flanigan, Stargate Atlantis: When a fan asked me for help with his grammar. I'm available.