I'm a big fan of Matt Berry from IT Crowd and Dark Place, but this one wasn't quite as on par with them. The music turned me on to Berry's albums which I think are all great, he truly is an enlightened musician with infectious tunes. There is a grace to it that I don't think filters into this show's comedy the same way. I see it like when H. Jon Benjamin had his own show, I'm all for dark humor but his and Berry's humor are better off seeing some balance, instead of leaning almost completely on dark / being a dick (or maybe I'm not into that level of dark humor). I think Berry totally accomplished this in the scenes where he acts like a gentleman with a girl, until she mentions she has a boyfriend and he lashes out. That shows a bit of vulnerability which makes it believable. I'm not saying to lighten up on the dark humor, but I'd like to have seen more depth with it to keep me tuned in.
Fulcher playing the American idiot had its moments, but it got old pretty fast for me born and raised in the US, assuming maybe it'd be more funny if I was a critical Brit. This might be why Mr. Show worked better for me too, an American take on dark humor.
Back to IT Crowd, I think one of the best things about it is there is more balance with the character, Jen (who is brilliant in that show). In addition to the testosterone and geeky computer humor, Moss and Roy have to share their office with a woman with her own problems, which adds tension and levels the playing field.
Overall I'm always excited to see Matt Berry in any production, with his hilarious, ironically fine-tuned manner of speaking (whiskaaayy!). Rich Fulcher, not really sure this is him at his best for me, but I'd be interested to see his other work.