The float itself, a unique combination of audio-animatronics and puppetry that only the float makers can accomplish.
The 1st of a Two Shorts Format episode, entitled "Where There's A Wilt There's A Way", is mostly just 15 minutes of Wilt missing a basketball game on TV doing favors for people because of his inability to say no, which even gets him into jail and escaping from it twice. So at the end, he gets back to Foster's, grabs Bloo a bowl of chips (the favor which, keep in mind, if Bloo hadn't asked in the first place, Wilt could have seen the entire game uninterrupted), and sits down the very moment the game ends. Bloo pettily complains that Wilt didn't get the right flavor of chips and demands that he go back and get the right kind. Wilt finally snaps and delivers a CLUSTER BIG NO.
In Bloooooooo, Frankie DRIVES THE BUS THROUGH THE (LOCKED) FRONT DOOR.
Eduardo taking on all of the Extremosaurs using cowardice as his main offense.
Eduardo rescuing all of the friends from the Pikachu-ripoff creature. Someone that hysterical managing to stay calm, cool, and collected for that long deserves some kind of medal.
Him finally standing up to Terrence also counts.
"I AM NOT A SCAREDY-BABY!!!!!"
Bloo in the episode "I Only Have Surprise For You", when he arranged a Xanatos Gambit to humiliate his friend Mac while celebrating his birthday. While that move just made him more of a Jerkass to some, it proved that a character often portrayed as having the IQ of a walnut actually has some genius tendencies when he's not being a Cloud Cuckoolander.
In "Duchess of Wails", Duchess finally gets adopted. However, the family that adopts her lives next door to Mac, and because she won't stop yelling and screaming, Mac's mom plans on moving away. Mac and Bloo try to get Duchess back into Foster's, only for Madame Foster to act as a general in keeping her out. What ensues is a full-out war of everybody in Foster's vs. Mac and Bloo, where the members of the house use produce as artillery. The entire scene is epic, but Madame Foster's speech before the battle is just fantastic.
Madame Foster: Yes, my imaginary friends, these three will be devoured by Foster's like bagels with lox! I say we shall outlast them all! We shall make this night one worthy of remembrance! Alright my imaginary friends, TO WAR!
Mac: What!? How did they know we were coming?
Bloo: The mighty eye of Foster sees all.
In "Frankie, My Dear," Frankie's Unwanted Harem makes her date extremely difficult. When she goes to the ladies' room, the date reveals himself to be a Jerk Ass, and insults her harem (Bloo and Mac among them)... without realizing Frankie is right there. Having realised what a loathsome sleazeball her good-looking date really is, she turns to him with a face like stone as he desperately tries to convince her otherwise, before concluding, "Hey, Frankie...did I ever tell you how awesome you look in that dress?" Without a word, Frankie balls her hands together, cracks her knuckles...and launches a piledriver straight into the camera lens and punches him out.
The last scene of the episode has Mac and Bloo comment how awesome of a beatdown she gave the guy, including a super-atomic-wedge of sorts (and that he wore briefs).
Madame Foster attempting to protect the group from a bear in the episode "Camp Keep A Good Mac Down".
Mac winning the race at the end of "Race for Your Life, Mac and Bloo", even though if he ends up in the hospital for exhaustion and dehydration.
Bloo gets a minor one in "Cookie Dough" when he manages to con the normally sane and rational Mr. Herriman into getting the cookie recipe out of the safe.
Similarly, in "Partying is Such Sweet Soiree", Bloo throws a massive house party while Frankie, Madame Foster, and Mr. Harriman are out. After the latter returns (having been tricked into leaving so this could happen), Bloo manages to convince him that it's his fault.
(Mr. Herriman goes into full Oh Crap! mode, even falling backwards in shock and having to be caught.)
Mac gets one in "My So-Called Wife" just before the climactic jet-car duel. Bloo is terrified and suggests that Mac simply drive them both and the jet-car out of there, but Mac responds with a grim speech about how the whole contest has become about truth, honour, etc...Bloo comments bewilderedly, "What do you mean?" Mac's response? "I. DON'T. KNOW." And he slams the pedal to the metal.
This episode also features Coco's Moment of Awesome. Following the fiery conclusion of the jet-car duel, she and Herriman are plummeting from the heavens to what seems like certain doom. She promptly grabs Herriman, pops open a parachute from nowhere, and saves them both in style.