Along the lines of "spot GI Joe in a movie" lists or "TV/Movies with Joe names", how about:
list any songs that make references to GI Joe. Hip hop, in particular, is rife with them.
For example, much as I hate him:
Black Rob - "Like Woah"
(the line: Play y'allself - I get the G.I. Joe)
Busta Rhymes "WooHah (Got you all in check)"
(the line: "Blast your --- hit you with my direct blow
Bo!! Coming through like G.I. Joe")
But my favourite all time:
Leaders of the New School, "Time Will Tell"
(the line: "Hostile, most wild, stomp - I'll rise. Timber in the land of my man Snake Eyes! Shallow as a shadow in the shade of the night!")
I got a few more, but can't recall them just now...