I actually watched it all the way through, pausing a few tens of times. But I feel versed on both sides now. Here are my cliff notes:
Democrats largely behaved (aside from Franken, who showed his ass yet again). Their main points were 1) people will suffer while these GOP pinheads challenge our great leader's fantastic program, and 2) hey, maybe that Florida judge overreached and exercised judicial activism, just as our great leader said.
Fortunately this was a panel not to be toyed with. There were three who believed the Obamacare mandate was constitutional, and two who didn't (the Dems sneakily got a Reagan administration appointee to be their main arguer, along with a former Marine). None of them took kindly to being pigeonholed by either side, which was nice.
But as to the Dem points, the first was standard fare boilerplate for such hearings and was completely ignored. The second item was mildly spanked down by both the GOP Senators and almost all the panelists, in a civil manner, of course.
Senator Blumenthal also tried to make the point that the judiciary should presume that Congress is passing constitutional laws in the first place while deciding their business, added to by chairman
The most persuasive argument to me was that if the mandate passes muster then Congress could later compel all citizens to purchase other things. Using the vegetables example, they could not force someone to eat four servings of broccoli per day, but perhaps they could force one to buy four servings a day. Or they couldn't force you to go to the gym, but to buy a gym membership, etc.
None of them touched much on the issue of waivers for religious reasons or whether illegal aliens will be forced to participate in the mandate and if so, how that could be legal, but all in all it was well worth the time invested in watching.