IMAX staffer Hugh Murray posted an entry on the IMAX blog about their first mainstream 3D IMAX release, The Polar Express: An IMAX 3D Experience, which was released in November 2004.

Here is an excerpt from that blog posting:

Finding the right opportunity to develop our first 3D feature film was no easy feat. We were winning studios and filmmakers over with our Digital Re-Mastering (IMAX DMR) technology, but this was our opportunity to take it a step further by displaying our 3D conversion (or rendering because it isn’t subject to the limitations in a live-action conversion to 3D) technology in a Hollywood movie. Although our 3D technology had been proven through our multiple space and science documentaries, introducing this technology to Hollywood was a tough sell.

Click the Read link below to view the full blog article.

Many theaters show The Polar Express each holiday season, so it wouldn't be any stretch to imagine that we'll see showtimes for The Polar Express: An IMAX Experience (showtimes are already available) and The Polar Express: An IMAX 3D Experience appear in the next few months. You can keep an eye out for when it's playing near you by marking them as your Favorite Movies!

Lacking that as an option, you can enjoy the movie in 3D at home if you have the right equipment (IMAX-sized screen optional, but not necessary)! Gift Shop merchant has The Polar Express (Single Disc Blu-ray 3D/Blu-ray Combo) for a pretty good discount. If you don't have a 3D-equipped system, you search for The Polar Express on DVD, Blu-ray, or Instant Video.