Caleb Dume, AKA Kanan Jarvis, is a Jedi character from Star Wars Rebels. He took the name Kanan to hide from the empire after the Jedi purge. He has an Alien Twi'lek wife named Hera and though he sacrificed himself to save his crew, he did bear a child before he died.
There's a Caleb in Divergent! And Caleb Logan was on Bratayley, the YouTube channel. He actually passed away on October 1st, 2015. He was only 13 years old though :( I think Caleb is a wonderful name, and I don't get why it's getting so much hate. :)
I never really noticed this name, but since I've became a huge fan of Kings of Leon I kinda started to really love it - their lead singer is named Caleb.
Caleb Snyder was a popular character on the soap opera _As the World Turns_ starting in the 80s. I wouldn't doubt many Caleb babies are a result of this character.