In "Restaurant", Pee-wee asks Jambi to grant him his wish.
Jambi: What do you want? Pee-wee: Oh, come on, say it like a real genie! Jambi: Oh, all right. (ethereal voice) Your wish is my command, oh wise and powerful master! (normal voice) So what do you want?
Unfortunately, Pee-wee has trouble deciding what to wish for, and says, "I wish I knew what to wish for." Jambi grants him that wish, but not actually what he wished for. Pee-wee protests, so Jambi replays the whole scene on Magic Screen to show Pee-wee his mistake.
Pee-wee: What a gyp! You tricked me! I want another wish! Jambi: You know the rules, Pee-wee: only one wish per show! Pee-wee:(a barrage of "Big 'NO!'"s)
Also, the restaurant scene itself is pretty funny: Captain Carl asks for a steak with baked potato and a salad (the house dressing is liver and noodles) and a pink lemonade, but he learns to his dismay that the only thing that the restaurant has is peanut butter and jelly sandwiches — costing a steep $2.00, yet!
In To Tell the Tooth, Pee-Wee had a huge toothache after munching on corn on the cob. And has decided to make a wish on Jambi on Pee-Wee on that the toothache is not so painful:
Unfortunately, Jambi was not here. He was in Mount Rushmore. He was out. It reveals an answering machine instead of Jambi.
Pee-Wee: HELP! JAMBI, HELP! (In pain while pounding on Jambi's box many, many times) JAMBI!
*Jambi's box opens, And it reveals an answering machine*
Jambi's answering machine: Hi, I am not here to grant your wish right now. So please sign your name and wish right here, And I'll be back to grant them just as soon as I can. (BEEP!) (Jambi's box closes)
*Pee-wee Herman gets shocked about it*
During the closing credits when flies his Scooter over Mount Rushmore before hitting road, Jambi appears at the end.
In Sick, Did Somebody Say Sick?, When Jambi tried to grant Pee-Wee a wish to Paris France, Nothing happened.
Pee-Wee Herman: Weird! Paris looks a lot like a playhouse. And that French man looks exactly like Globey.
Globey: That's because I am Globey and you are still in the playhouse.
It reveals later that Jambi had a disease called "Meka-Leka-Hi-Meka-Hidy-Itis".
In "Mystery", Pee-wee's personal items keep disappearing, one by one. All the while, Pee-wee is asked what happened to them and he says simply, "I don't know! It's a mystery!" Cue a creepy man playing a suspenseful organ note at the end of the playhouse! At one point, Pee-wee says, "It's a mystery!", but the organist has fallen asleep and thus doesn't respond. Pee-wee has to walk up in his face and yell, "MYSTERY!" The organist is startled awake and plays his organ note.
(A long-distance shot of the playhouse is shown with Pee-wee sitting on Chairry) Pee-wee:(jumping up from Chairry in pure fury) THAT DOES IT! I HAVE HAD ENOUGH! (Pee-wee walks up to the camera slowly) Pee-wee: They can take the suit off your back. They can take your cereal bowl and spoon. They can even take your album of photo memories. (By now, Pee-wee has walked up so close to the camera that his face covers the screen) Pee-wee: But when they mess with your dots... they go too far!