I do think that Sen. Clinton's possible run for POTUS would create a very interesting problem. Kofi's term ends in early 2006 and the next presidential election wouldn't be until 2008, therefore assuming Bill gets the post, we might end up with a Clinton running for president (and possibly being elected)while the other serves at the UN? This would create very big potential conflicts of interest.
If Kerry gets elected this year, Hillary would not be able to realistically run until 2012. Using 1980 as a guide (Carter vs. Kennedy), the Democrats know all too well what happens when an incumbent president faces a primary challenger from his (or her) own party.
A few years back, Oliver North on his Common Sense radio program mentioned the possibility of Bill Clinton becoming Secretary General to the U.N. and I'm almost certain that both Left Behind author Tim LaHaye and his wife, Beverly LaHaye of Concerned Women for America, hinted on that possibility around the same timeframe.
Which leads to another question:
Is Bill Clinton the prophesied Anti-Christ?
"TransEastern! You'll feel like you've never left the ground because we treat you like dirt!" SNL Parady ad circa 1981