I hate people who talk during a movie. (use: One thing)
One thing that I hate is people who talk during a movie.
People who don´t show up on time for things irritate me. (use: The thing that)
The thing that irritates me is people who don´t show up on time for things.
People who drive too slowly really drive me crazy. (use: Something)
Something that drives me crazy is when people drive too slowly.