SZS is all good as long as you're sadistic. The only jokes I could see going over someone's head are the things whatshername the otaku says and a couple other references in random places like the Fusion Dance.
Also, according to the spell check, whatshername is a word.
Side note: Claymore is looking good, based on the first episode.
Never watched it, but as I understand the ending is incredibly disappointing. <_<
THE ENDING IS ONLY DISAPPOINTING IF YOU'VE READ THE MANGA, I THINK