Okay, I do want to go into how bad it was

"The Happening"

Spoilers ahead

Here's what sucked:
(okay, it all sucked, but this is what sucked most)

• Mark Wahlberg is a science teacher. A quote is clearly visible on the chalkboard behind him. It is attributed to Einstein. It is almost certainly bullplop. Wahlberg's character also spouts some non-science woo to his class. The saddest part is that he may just be a pretty accurate depiction of a high school science teacher.
  
• John Leguizamo is a math teacher. He likes to comfort people with made up statistics.
  
• The phrase "act of nature" is used several times. "Nature" here is a stand-in for "God".
  
• Plants (not any specific plant, mind you, plants in general) have suddenly evolved (their word, not mine) to emit a toxin that causes people to commit suicide, because humans are an undeniable threat to the planet. The event is a warning to humans.
  
• Random crazy-hermit-lady
  

Later,