From the little I've seen of the hearings the past two days, here's how I would characterize it:
Democrats: calmly extracting facts, building a strong case
Republicans: acting like drama queens, nit-picking over trivial and meaningless details, unable to refute what's actually being said by the witnesses so they try to reframe it into something completely different
Nunes comes across like a complete moron. I'd be embarrassed if he was my representative.