for some reason, cephs seem to be very popular with "this is almost believable" web sites, maybe because giant squids are one of the few "cryptozoology" animals that turned out to actually be proven to exist, so a lot of people associate cephs with urban legend kinds of things.
If you like tongue-in-cheek science, the Museum of Jurrassic Technology (http://mjt.org) is pretty cool. I think that all of the mjt exhibits are "real" in the sense that they are what is documented, even if they are not what would normally be considered "science" or "natural history"-- for example, I think the "letters to Mount Wilson" exhibit really consisted of genuine letters sent by crackpots to what was at the time the most famous observatory in the world.
I actually read a book on the Museum of Jurassic Technology. I got about halfway through (I'm terrible about finishing books) but it was pretty interesting! I couldn't tell if it was real or fake, which is fun.