That's true too - tastes change. My tastes when I was a student was the more controversial the better.
I've shied away from that now. Controversial jokes are fine if they're clever, but if it's couple with a lazy knob gag, I shy away.
Stewart Lee is a comedian who is blatantly clever and everyone I know loves him, but I just never find myself laughing. I'm entertained, but soundlessly. I think Sadowitz is hysterical, mind.