Ivy, Shmivy...The Ivy League ain't so great anymore. Any of these schools can give a run for the money.
In no particular order:
Universities:
Duke
Rice
Georgetown
Stanford
U of M
Berkeley
UVA
Lib Arts:
Amherst
Wellesley
Swarthmore
Haverford
Williams
Smith
Bryn Mawr
Vassar (you know it, bizatch)
Wesleyan
Bowdoin
Middlebury
Yeah, being Ivy doesn't mean much of anything; it all depends on your department regardless. The best schools across the board are, in no particular order, Harvard, Yale, Princeton, Berkeley, University of Chicago, Stanford, Georgetown. . . potentially Northwestern, MIT, Duke . . . Rice, U of M on the waiting list, and I don't know enough about UVA other than they're great with early american history.
Then again, maybe I'm entirely wrong. Regardless I'm sure I've missed some schools.
Edit: My only knowledge of cal is math/engineering/et al, so I can't speak about it. Heard Good Things about it though.