Enlarge (credit: Benj Edwards / Jonathan Zufi / Apple)

Forty years ago today, Apple released the first Macintosh. Since that fateful day in 1984, Apple has released hundreds of Mac models that run the gamut from amazing to strange. In honor of this birthday, we thought it would be fun to comb through history and pull out the rarest and most unusual production Mac models ever made—including one from another company.

Each machine listed below was manufactured and sold to the public—no prototypes here. These computers highlight not only Apple's innovative spirit but also its willingness to take risks and experiment with design and functionality. It's worth noting that what is "weird" in this case is a matter of opinion, so you might have your own personal picks that we missed. If that's the case, let us know in the comments. And we'd love to hear what the Macintosh means to you on this 40th anniversary.

Special thanks to Jonathan Zufi for providing several photos for this article. In 2014, Zufi created an excellent coffee table book called Iconic: A Photographic Tribute to Apple Innovation and formerly ran the Shrine of Apple website.