The testimony in its entirety, from 10 AM this morning until almost 6 PM, subtracting roughly an hour for periodic breaks. As much or as little as you can stomach. I recommend at least seeing the opening statements by the Democrat and Republican committee leaders (about 5 minutes each), and Cohen's lurid full statement (about 30 minutes), followed by questioning by each congressmember, where there is some fireworks and theatre, but little else really eventful.
Democrats had nothing new to offer with calling the discredited Cohen in, but they did it anyway, just to distract from Trump's accomplishments, and to (as it turned out, unsuccessfully) throw some mud on the president.
