Beck asked a straight question but the dad didn't wanr to give a straight answer. Beck is great!
I think this is why Beck could (if given the chance) succeed at TV, especially in interviews. When you're on the radio (as he is) you're used to dealing with indignent callers, or callers who won't admit to a point of view, and your interview skills are honed.
The TV media, in general, seem to have lost the ability to ask the hard questions, and if they do ask them, they don't press for the answer if not given, or call the person on skirting the issue.
A radio person is probably better at that skill, as was demonstrated with the dad in the interviewer...Beck asked the hard questions and wouldn't let the guy off the hook when he tried to "not answer."