Only in the TV series, there was one episode where Gohan went on a date with a girl named Angela because she knows a secret of his. So she bribes him into going out on a date or she'll tell everybody the secret. Gohan thinks that she knows that he is the Great Saiya Man but it turns out that the secret was that he wears teddy bear underwear.
The movie Dead Zone was origanally named Return My Gohan
In the Japanese series Gohan's voice was done by a girl
Only in the TV series there was an episode where Gohan was getting tuttored. The guy was a real pain and whips Gohan with his whip. Once he hit him really hard he started to bleed. Chi-chi started to get really angry about that but when the tutor talks shit about Goku, Chi-chi went nuts and ran him out of the house.
During the Raditz fight Gohan's power level went as high as 1,307
before the Vegeta/Nappa fight his power level was 981 and during the fight it went to 2,800
His max power level on namek was 14,000
During the Vegeta/Nappa fight (the three hour break) do you remember when Gohan said that Nappa smelt like toenails? Well he really said that your mamma's got a big fat belly. And then Nappa said "how could that kid possiably know that?"
At one point he was stronger then his dad which made him the strongest Z warriar.
during in the cell fight Gohan was about to give up the fight but Goku pushed him so Gohan became a major aid in killing Cell.
After the Buu fight Gohan finnaly realized Chi-chi's wish of him being a scholar and so he went back to school and became a scholar.
His voice is done by a girl too.