This series has it all. It has enough joking around for those who like the "Two Guys on the Couch" style of Lets Play. It has riffing. It has thoughtful analysis and commentary from experienced game designers. And it has Josh's humorous hyperactive playstyle.
Spoiler Warning is the high watermark for Lets Plays
. Its really almost too good for this format.
Rutskarn and Josh form the core of the experience bring the elements that other LPs traditionally bring, screwball play and humor. Shamus and Campster give the show gravitas (if its possible for a show in this format to have that). And Mumbles brings heart and plays off of Rutskarn really well. Those two bring out the best in each other.
I find that when I'm done watching these guys play they've covered all bases. You'll see the good, the bad and the goofy before you're done.