In select boxes of Sugar Bombs, there was a free Captain Cosmos decoder ring.
In Mothership Zeta, Sally mentions that the command bridge looks exactly like that of the one in Captain Cosmos. She may also tell the player character that climbing the waste disposal shaft they have fallen down would be impossible "unless you're Captain Cosmos."
On the Hubris Comics receptionist terminal, under the "release schedule" section, it says that the comic "Captain Cosmos: Truth, justice and the Space-American way" is due for release in June. This is a reference to Superman's famous catchphrase; "Truth, justice, and the American way."
The following is based on unverified behind the scenes information and has not been confirmed by canon sources.
The show aired at 8:00 PM on Thursdays. This may be a reference to the original series of Star Trek, which aired in the same time-slot during its first two seasons.
Jangles might be a reference to the similarly orange-spacesuited monkey sidekick, Mona, in the 1964 film Robinson Crusoe on Mars. The genre is the same, and the suit is of a similar design with the illogically exposed tail.
End of information based on unverified behind the scenes information.
↑First Edition Fallout 3 Official Game Guide Collector's Edition p.493-494: "I checked out Hubris Comics, and gave myself a makeover based on that nemesis of Captain Cosmos, the Jester. I was no longer a fished-necked weirdo with a terrible and expensive gun. I was a green-haired psycho with a A3-21's Plasma Rifle. I got it by tracking down a wayward android. It was the best move I ever made, although it made me into a complete outcast." Note: This is an excerpt from the prefabricated character archetype for Porkchops The Fish Lady.