Just gonna list a few favorites, there are lots and lots of VC games I would recommend but the list would be too long :p
+1 Boxboy
+1 Cave Story
+1 Picross-e series
+1 VVVVVV
+1 Kirby's Pinball Land
+1 3D Sonic The Hedgehog 1/2
+1 Super Castlevania IV
It's not the movies or games downloads that I would worry about, like breaking into networks, downloading encrypted things, spying on network traffic. I have seen so many "Top Secret" seals on files when I was a kid
I was obsessed with finding UFOs, a surprising amount of US files where stashed on computers in other countries, China back in the early 90s omg sooo much