Bob is a very common name.  Until I went off to college, everybody called me Robert.  So, if you met me prior to 1965, you probably still call me that.  It's no big deal; as someone said, "I don't care what you call me, just so you call me to dinner."

When I saw the Disney film, The Black Hole, I was taken aback to discover that the names of the two good robots were Bob and Vincent.

Here are B.O.B. and V.I.N.CENT with the evil Maximilian looking on. (Copyright Walt Disney) 

Somebody even wrote a book about the name Bob: The Bob Book : A Celebration of the Ultimate Okay Guy by David Rensin, Bill Zehme.