Which one you ask?  Perhaps Fred Thompson...

Or maybe even Tommy Thompson...

But what if the Thompson Twins don't satisfy your lust for Thompson Presidential mania?  I know what we need... we need a third Thompson to really spice things up.

How about Ed?  He did get 10% of the vote for Wisconsin Governor in 2002:

Word is floating that Ed Thompson, who has served as both mayor and city councilman in Tomah, Wisconsin (and got over 10 percent of the gubernatorial vote in 2002 running with the LP), may end up seeking the Libertarian Party's presidential nomination next year.

Ed Thompson running as a Libertarian... just what Ron Paul needs to look normal again.  The only thing that could be more confusing would be if each one was running for a separate party instead of just two out of the three.