Here's a stream of a guy playing the entire beta, he seemed like he was having fun (then again that's pretty much how day9 is always). The guy is a professional SC2 caster, so keeps relating stuff to SC which is pretty funny. Obviously there's definitely spoilers in the videos.
Start of the cast - Him starting the game as a witch doctor, lots of him exploring menus figuring out how stuff works. Switch it to HD to make the videos look better.
Part 2
Part 3
Part 4
Part 5 - He explores the crafting interface at 10:44
Last video
with lots of fighting/End boss @13:15
He also did a stream last night as a barbarian playing in co-op with a monk (which I have to say is remarkably smoother than I expected), but recorded video isn't uploaded yet.
Other things of note RB people will probably be interested in-gold stacks account wide, it's fairly easy to transfer items between characters, you can convert items into gold or crafting materials essentially when ever you want (no need to go back town to sell stuff), and you can teleport to New Tristam whenever you want although it has ~10 sec cast time. It reminds me of WoW where they looked through the game to eliminate stuff that was deemed "un-fun" and repetitive for no reason, and got a bunch of old-timers irritated at them till they started playing for awhile.
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The game does look pretty easy on single player, but I guess only easy difficulty is able to be played so far in the beta. Once you add a second player however monster health and damage goes up substantally, at least doubled probably more.