Like many other commenters, I wouldn't consider rickrolling to be "early internet." First of all it's a mutation of the duckroll meme, and dates as late as 2007. Trogdor predates rickrolling by 5 years.

But, I do have to say, I appreciate the rickroll as the internet's official prank. Tricking someone into watching a slightly cheesy but inoffensive music video to an actually pretty good song about being a faithful lover is pretty okay.