Watch I Think Bob Is An Alien for Free: How to Stream the Movie Online at 123Movies. . I Think Bob Is An Alien is a coming-of-age comedy. Blake and Charlotte are best friends, and high school graduation is approaching fast. Instead of focusing on their future they notice a new kid, Bob, moves in next door to Blake. They see Bob acts a little strange- they decide that he MUST be an alien. Blake watches Bob and confronts him about being an alien. She decides that aliens make cool friends.