General/Motivational:
* Go for it!
* Let's go!
* Go big or go home!
* Go get 'em!
* Go the extra mile!
* Go with your gut!
* Go with the flow!
* Go time!
* You go, girl!
Funny/Sarcastic:
* Go figure!
* Go ahead, make my day. (From the movie "Sudden Impact")
* Go away! (Usually said in a joking way)
* Go fish! (Often said to someone who has asked a dumb question)
Specific Situations:
* Go on, tell me more! (Encouraging someone to share information)
* Go ahead, I'll wait. (Giving someone permission to do something)
* Go ahead, make my day. (Challenging someone)
* Go with the flow. (Accepting a situation and letting it happen)
* Go postal. (Meaning to lose control and become violent)
Famous Catchphrases:
* "I'll be back." (Terminator)
* "Hasta la vista, baby." (Terminator)
* "May the Force be with you." (Star Wars)
Note: This is not an exhaustive list, as there are many more catchphrases that include the word "go."