Well... I saw many Gibson's in the Nov. 2, 2012 episode and my calculation there about 27 Gibsons.
34 times
According to the Ant Farm wiki, they show Gibson 66 times.
66
9
Twice.
there were 66 gibsons
many many different times episode 45,87,13,76,and 58
Twice, 1968 and 1970
like, twice. once in episode 12 and in the last episode.
64 times including the song!
Harpooned?? If your referring to the times when Brennan gets hurt there are many times.
mel Gibson has 9 children