Here are all the modeling sites that I visit on a regular basis. You can find all sorts of good information on them about most of the stuff I do here. I've also included a bunch of the sites that I go to for paper models. I try to keep my links up to date, and I'll add new ones when I find a good one. And if you have a great link that you want to share, If I like it, I'll add it.
General Sci-Fi Links
This is, in my opinion, the best sci-fi modeling site. They review models, show previews of models yet to come and even have several how-to articles. Also, they have several reference sections that include hard to find pictures of actual studio models. A must visit site for the sci-fi modeler.
CultTVman's SF Modeling page is top of the line when it comes to Sci-Fi modeling. They've got everything from Star Wars to Lost in Space. The have dozens of subjects and hundreds of pages of pictures. Another great reference for any sci-fi model builder.
Ex Astris Scientia
This is not a modeling site, but an outstanding reference for all sorts of Star Trek info. He's got a list of known Starfleet ships, info about the shows, discussions about the 'science' of the future and more. This is the site where I got most of my info about for the Honshu.
Paper Modelers has a forum dedicated to paper and card modeling as well as a lot of downloads. There is a lotsof good info there.
Paper-Replika has some nice sci-fi models along with some others. It looks like there will be new models about once a week, so be sure to check in from time to time to see what you can get.
Saul's Paper-Card Model Page has some good general info on card and paper modeling. Worth browsing to get some tips and advice.
Free Paper Toys is also another list of links.
U-Don's Factory has the Chinese Long March 2F rocket and an Apollo lunar lander. Both are nice models.
Delta 7 Studios is a comercial site that has some good rocket models.
ALIENS Papercraft has some great models from the Aliens movie series.
This is a very nice dropship model for gaming minatures.
Paper Starships has some more Homeworld, Homeworld 2, Star Trek, Star Wars, and other sci-fi models on it.
Card In Space has a couple nice models from Project Mercury.
Niels papermodels has a growing collection of rockets. Nice detail and a good selection.
Here is an X-20 for you.
The SF Paper Craft Gallery has some nice models from Star Trek, Star Wars, and other shows.
The Lower Hudson Valley Paper Model Giftshop has a nice collection of paper models. Including a 1/48 scale Saturn V!
Yamaha Motors has a couple pretty slick Motorcycles.
Here are some nice Japanese cars and fighters in Pepakura format.
You can find a Japanese H-2A rocket here.
The 3D Papermodel Net has a huge collection of links. It's not in English, but you'll figure it all out pretty easliy.
Here is the Pepakura Designer that I use for my models.
You can get Independence War Paper Models here. There are some nice models here.
Federation Models is an outstanding online store for Sci-Fi models and decals. Their model selection is great, and the decals they offer are outstanding. JTGraphics is an awesome line of graphics. The creator really cares about his product and it shows in his decals. There are no other decals as good as his in my opinion.
Custom built space ship models and scale replicas including the Saturn V Rocket, Mercury, Gemini, Gemini Titan, Titan, Atlas, Redstone, Apollo, Lunar Module and other Space Ship Models.
Micro-Mark is a great online store for all sorts of modeling needs.
Real Space Models has a bunch of nice space models. Very high quality stuff.
Don's Light & Magic has some nice add-ons for many Star Trek models.