Nixon vs. Clinton

Nixon: Watergate
Clinton: Waterbed

Nixon: Biggest fear: Cold war
Clinton: Biggest fear: Cold sore

Nixon: Carpet bombing
Clinton: Carpet burns

Nixon: Vice President: Greek
Clinton: Vice President: Geek

Nixon: Couldn't stop Kissinger
Clinton: Couldn't stop kissing her.

Nixon: Known as tricky Dick
Clinton: no difference

Nixon: Ex-president
Clinton: Sex President

...and my #1 favorite:

Nixon: Talked of achieving Peace with honor.
Clinton: Talked of achieving piece while on her.