Boy, you hit that nail right on the head. It's hard to listen to Franken talk, no matter what he's saying. It's his voice, his hesitation, his stumbling. He sounded drunk or hung-over to me (or maybe it's just the unaccustomed burden of having to think on his feet).
Franken once wrote a book calling Limbaugh a big fat liar. Judging from his photo he's considerably fatter than Limbaugh ("Al Franken Is a Big Fat Fraud?"