I would take a high powered assault rifle, empty a full magazine into his face [http://tvtropes.org/pmwiki/pmwiki.php/Main/ptitle8gti69rvj2oq?from=Main.WhyDontYaJustShootHim], and then incinerate the corpse. [http://tvtropes.org/pmwiki/pmwiki.php/Main/ThereIsNoKillLikeOverkill] Really, while it may be more humourous to devise an incredibly intricate Rube Goldberg-esque device [http://tvtropes.org/pmwiki/pmwiki.php/Main/AwesomeButImpractical] to see to the demise of my nemesis, it's just impractical. Now, I like theatrics as much as any aspiring evil overlord, but style must never come at the expense of substance.
Besides, all the money that I saved by just shooting him would allow me more funds to direct towards better marksmanship training [http://tvtropes.org/pmwiki/pmwiki.php/Main/ImperialStormtrooperMarksmanshipAcademy] for my minions, or better armour so that they don't die if someone so much as looks at them funny.
[small]Or I could just sit him in front of a computer with the TV tropes main page open. By the time he tore himself away I'd have long since achieved my plans of World Domination.[/small]