Being a reporter means having to constantly be on the go, learning new things..
...and those new things that Jimmy Olsen would learn at times, would put him at odds with his friend, Superman!
The Red-Headed Beatle Of 1,000 B.C.
While wearing a Beatle wig, Jimmy is listening to the Beatles, but he stashes the wig in his pocket as he gets a knock on the door. Kasmir is here, claiming to be a lawman sent to Jimmy by the Legion of Super-Heroes, who want Jimmy to take Kashmir back 3000 years. Jimmy drives Kasmir's time bubble there, where the future man reveals he was really a criminal, and needed Jimmy to drive the vehicle (which only got to Jimmy's time because it was pre-programmed).
Hippie Olsen's Hate-In
Jimmy avoids the barber for a while, letting his hair go for an assignment for Perry White...to join Guru Hansen's hippie cult. While there, Jimmy listens to them preach love, and falls under a spell of their flower power, with a mist that he thinks takes him to dream land (wherein he goes to punch Perry White for not giving him a raise on this assignment). He comes back to the love-in thinking it was all a dream, only to be exposed to the flower gas again, which sends him to get revenge on his girl, Lucy Lane, who was out dating another boy after seeing how messy Jimmy was becoming.