Shatner is so bad he's almost funny.
His take on Rocket Man (which, oddly enough was the first time I got the "dual meaning" of that song - but mainly because he whacks you over the head with it...) is REALLY bad, as well as Lucy in the Sky with Diamonds...
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche