Alien Attraction

Certain Hollywood actors are typecast into certain roles. For the longest time, Meg Ryan was the "nice woman looking for love" and Bill Pullman was the "best friend who never gets the girl." 

Recently, I found another actor who can be added to the list. She's Zoe Saldana, and she's recently been typecast as "the girl who should play an alien."

First, there's her turn in "Avatar."

Now, she's in "Guardians of the Galaxy."

I was also tempted to add in her turn as Lt. Uhura in "Star Trek." But she looked very human there, so it doesn't count.

Now I'm wondering what makes her so attractive to producers as an alien.