I've wanted to see the 2002 Sam Rockwell vehicle Confessions of a Dangerous Mind since about the time it came out, but never got around to it until now. If I were going to do a tweet-review of this, it would be "Way darker than I expected; don't watch it if you're in a misanthropic mood."
Maybe part of the reason I put off this movie was because I knew basically nothing about protagonist Chuck Barris, and very little about The Gong Show, which he created and hosted. Fortunately, the script is careful enough to remain accessible to those of us with limited background knowledge of the world of '60s-'70s game shows.