On a forum for the show Codename: Kids Next Door, we came up with this list of "Past the Radar" moments:
Season 1
ARCTIC-- Numbuhs 1, 2, 3,and 5 lose their clothes when they get blasted by a torpedo-like device.
LIZZIE-- After Lizzie says, "I'm sorry about yesterday, and I want to patch things up," Wally mutters under his breath, "Are you gonna do it?"
POINT-- In this episode, the kids investigate what teenagers are doing at "the point." Seems suggestive.
QUIET-- When Numbuh 3 starts teasing Numbuh 4 (disguised as Numbuh 1) after he returns, she is doing a naughty dance.
Season 2
SUPPORT-- Numbuhs 1 and 2 investigate what Numbuh 5's older sister Cree is doing with bras. How this ENTIRE episode got past the censors I'll never know!
Season 3
GRADUATES-- After Numbuh 86 gets turned into a dog: "Well that figures."
Season 4
SITTER-- Numbuh 2: (Purrs) Kitty's got claws!
Season 5
MAURICE-- Cree flirting with Maurice
FERAL-- Numbuh 1 and Lizzie making out after Numbuh 1 is "ape-ified."
HOLIDAY-- Numbuh 2: She (Numbuh 10) can fly my ships any day!
MISSION-- Stickybeard: Blow it out your port-hole!
Season 6
PARTY-- Cree flirting with Maurice
INTERVIEWS-- The "Drop a Log" ride.