I spent the day at the Field Museum this past Wednesday, and noticed that Mac's were used throughout the museum.
They've got a big exhibit for 'Sue' (their new Tyrannosaurus Rex) that includes two little workstation/kiosks with G4's and Cinema displays, and one large that stand that has _four_ Cinema Display's apparently running off the same G4.
I think I spent more time oogling the Cinema Displays than I did looking at the actual exhibit. ;-)
Josh