Mostly in VGTSX (Vanguard Total International Stock Fund),
some in MACSX (Matthews Asian Growth & Income Fund)--now closed to new investors.
Vanguard's energy index fund, VGENX, is said to be about 50% foreign (can't remember the prospectus), but I count that as an energy play, not international.
I used to have more int'l funds, but found that VGTSX had about the same mix as I was trying to build out of pieces.
I am trying a 50/50 US/foreign equities portfolio (no bonds). It has done very well for the past 6 years or so, so I have no plans to change.
Brat brought my attention to Matthews' India fund. I am watching to see if it has legs. The economies of India and China are starting to grow like crazy.