Heimerdinger is Anti-Fun

One of the most un-fun champions ever to play against. Laning against him turns into a stalemate. You'll probably get frustrated and feed him a kill.
No skill whatsoever; even if he misses his stuff it doesn't matter because no one can afford to fight him while he's got his turrets
Can't Gank him without taking ridiculous amounts of damage while he dances around.
Oh you Ganked and killed him? Guess what? He dropped a big turret and killed you both. Oh and guess what? Once he has a Zhonyas, it gets worse.