The best jokes/parts of the movie were all in the previews, literally.

I was so close to just walking out of the movie. And walking out of movies is very rare for me.

I'm not a pro on English accents, but Downey's accent didn't sound too natural to me(because it wasn't), as if he was struggling just to say his lines. And yes, I'm a fan of his other movies.

I don't know what movie everyone was watching but it was dull, boring, and had no real purpose. If it came out in 1994, maybe it would've been interesting, because the storyline wouldn't have been done to death yet.