I know the title song has become something of a punchline around here, but America, the Dream Goes On is a great album. The two Aaron Copland tracks are fantastic; there's the Hoe-Down from "Rodeo," and then Boston's brass section really shines in Fanfare for the Common Man to open the album. There's also a great arrangement of When the Saints Go Marchin' In.
It's worth noting, that virtually the entire album (minus Bernstein's America Medley) was re-released on a Philips compilation entitled America the Beautiful, which combined music recorded by John Williams and Arthur Fiedler. That's where I initially heard most of it; I had only ordered the original Williams album for completist's sake.