Paul Jackson profiles the eephus for ESPN. I do enjoy the pitch, having thrown a few eephuses eephi of them myself. I also had the pleasure of being in attendance at the Metrodome when Bob Tewksbury lobbed 44 to 48 mph balls at Mark McGwire in 1997.

A few other notable pitchers made use of the eephus, often renaming it to suit their needs. See: Dave LaRoche's LaLob, Steve Hamilton's Folly Floater, and an interesting take from around the world.