Question: Which actor played a minor character in the movie Old School and went on to act in "The Big Bang Theory?"
Sentence (from "Recombination (cosmology)"): In cosmology, recombination refers to the epoch at which charged electrons and protons first became bound to form electrically neutral hydrogen atoms. Recombination occurred about 378,000 years after the Big Bang (at a redshift of "z" =  ).
Relevant evidence: No