Like Dorian, I've been reading the "Superman Family Showcase", which is pretty much all Jimmy Olsen.
Jimmy Olsen lore is like absinthe or cognac; it's meant to be sipped, not downed in gulps. I've been reading no more than one story a day, sometimes letting a story take me two days while I savor the insanity. I think poor Dorian's been chugging Olsen straight up, resulting in Jimmy Brain Jam. Take two delicious Hostess Fruit Pies with Real Fruit Filling, Dorian, and call Dr. Scott in the morning... .
Anyway, like Dorian, I'm annoyed by the fact that Jimmy Olsen has a stupid catchphrase he says two to three times each story: "super duper". But, ah, I remind myself: there's a reason for it.
While Jimmy Olsen was created in the comic books, he really only became popular because of the 1950s television show, "The Adventures of Superman". Jimmy Olsen was portrayed by the absolutely marvelous Jack Larson.
TV loves catchphrases ("Dyn-o-mite!"), and the TV Jimmy Olsen's was -- you guessed it -- "super duper". Larson, a superb actor, played Jimmy so low-key that he could get away with that sort of thing, without it becoming obnoxious.
The use of "super duper" in the Olsen stories in the Show is an attempt to echo the teevee show. But, since nothing in comics in ever "low-key", it's like a punch in the eye every time Jimmy says, "Super duper!"
Another Olsen gimmick the comics "caught" from the show was the whole "Don't call me 'chief'!" routine, which is clearly a vaudeville-style running joke that works well on the telly, but can seem forced and stilted in print.
Sadly, he who lives by the Olsen dies by the Olsen, and Larson was so badly typecast as Jimmy that he mostly left acting entirely after the show. Happily, the deeply talented Larson became and accomplished writer and producer instead, and was groovy enough to be buds with Montgomery Cliff, James Dean, Christopher Isherwood, John Houseman, and Virgil Thompson.
His groovyness was helped by being just about as "out" as gay men got in the 1950s; if only they had let Jack do some of those "Jimmy Olsen in drag" stories from the comics!