Basically just cable television (Fox, CN, Nick, etc.) for free. Yes, it's piracy, but who seriously pays for cable anymore? Also, argh.
Archival of people's recordings of what the web used to be like. Sadly, you can't log-in right now thanks to some stupid pwners.
Web-based recreation of MS Paint that can be used on non-Windows operation systems like Mac and Chromebook.
A large gallery of screengrabs from the Simpsons. Only downside is that it doesn't have screengrabs from seasons 18-present.
A compressor for photos (png, jpg, etc.), that barely changes the image but lowers it's file size. As you can tell, it's very useful.