Fans of the Legend of Zelda series have been attempting to formulate some sort of timeline that connects all of the major Zelda games (some poor saps even try to tie in the CD-i games). With Nintendo's Zelda artbook, they kind of hammered out their own official rendering of the timeline, but another fan stateside took matters into his own hands. He dedicated an entire month to playing every single Legend of Zelda game—sans CD-i, of course—and wrote up a little something covering his deductions of the Legend of Zelda timeline.
Personally, I've given up on the idea that all of the Zelda games are related. There are some obvious sequential games, but trying to tie them all in together seemed nigh impossible. Apparently I just give up too easily, as Zach Potts of View from Heaven has shown.
It's a fascinating read, and any Zelda fan should look at what Zach has come up with.