It is hard making it as an actor. Even worse as a Voice Actor! There's only a few of them that make their living doing purely voice work, they're always doing other industry jobs, coaching, seminars, etc. Now, far be it for me to claim any expertise on the "biz", but I've a few paid gigs under my belt, and, even though they are all very talented voice over artists, Anime acting is just not my bag.
One of my roomies, through me, has developed a good ear for voice acting. Like he's getting way better at picking out who is talking from show to show. (Hell Tom "Professor Utonium" Kane has been in a LOT of commercials this year) and he's the one that watched a lot of anime. I pointed out that Cartoon (what we consider American cartoons) acting and Anime acting has some differences that, once you pick up on hearing them, really can irk you.
The easiest way to explain it is with Team America: World Police. You know how hammy the acting was? And it was hilarious? I call that "Overdrama" and I love it. A lot of anime acting, even if not that noticeable, is delivered in that Overdrama style. However, most of the time, even with respectable casts/productions, the overdrama creeps in, but juuuust enough to make it sound alien, without the "wink" at the audience that full blown Overdrama provides. This isn't really the actor's faults, because those same actors have been in plenty of non-anime roles and have done just fine. But rather, it has become the standard accepted by the medium itself. Hammy just enough to make you roll your eyes, without enough to let you in on the joke.
Like a B movie that doesn't know it is a B movie.
tl;dr? Anime acting is Tommy Wiseau.
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On Topic: It is not a show, but
Grim Fandango is the best Adventure Game ever made. Over on the
LP Archive there are two LPs of it. One is called "The Movie" wherein it is the entire game, no commetary, in video form. If you love amazing voice acting, film noir, and general AdG awesomeness, check it out.