Yes we have now on both imacs. A good thing is that we can now share accounts and content between both imacs...cool 
Mr C 
Mr. C., et al:
This week I upgraded to Snow Leopard on my 2 yr old iMac, and wife acquired a new MBPro 13" (very nice "toy" - in less than 2 days she's given that little "OK, so you told me so" smile - after 37 yrs together, those are to be relished).
When setting up the iTunes account on hers, I noted the new Home Share feature.
Has anyone played with this enough to know if allows access to separate music libraries on multiple account users, and if so, from either machine? I'm thinking of ATV or AEX for streaming music to her upstairs audio rig, from either the MacBook or my iMac, which is in my man-cave in the basement.
Another question - would iPod Touch or iPhone be able to provide remote control to these multiple libraries?